749668608 has 288 divisors, whose sum is σ = 2440372480. Its totient is φ = 228427776.

The previous prime is 749668597. The next prime is 749668657. The reversal of 749668608 is 806866947.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7278285 + ... + 7278387.

Almost surely, 2^749668608 is an apocalyptic number.

749668608 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 749668608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1220186240).

749668608 is an abundant number, since it is smaller than the sum of its proper divisors (1690703872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

749668608 is an equidigital number, since it uses as much as digits as its factorization.

749668608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The square root of 749668608 is about 27380.0768443041. The cubic root of 749668608 is about 908.4264590957.

The spelling of 749668608 in words is "seven hundred forty-nine million, six hundred sixty-eight thousand, six hundred eight".