745671540 has 24 divisors (see below), whose sum is σ = 2087880480. Its totient is φ = 198845728.

The previous prime is 745671529. The next prime is 745671547. The reversal of 745671540 is 45176547.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745671547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6213870 + ... + 6213989.

It is an arithmetic number, because the mean of its divisors is an integer number (86995020).

Almost surely, 2^745671540 is an apocalyptic number.

It is an amenable number.

745671540 is an abundant number, since it is smaller than the sum of its proper divisors (1342208940).

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

745671540 is a wasteful number, since it uses less digits than its factorization.

745671540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12427871 (or 12427869 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 745671540 is about 27306.9870179777. The cubic root of 745671540 is about 906.8090711900.

The spelling of 745671540 in words is "seven hundred forty-five million, six hundred seventy-one thousand, five hundred forty".