74952639 has 24 divisors (see below), whose sum is σ = 113580480. Its totient is φ = 47573568.

The previous prime is 74952629. The next prime is 74952659. The reversal of 74952639 is 93625947.

It is a happy number.

74952639 is a `hidden beast` number, since 7 + 4 + 9 + 5 + 2 + 639 = 666.

It is not a de Polignac number, because 74952639 - 2¹² = 74948543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74952594 and 74952603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74952629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13257 + ... + 18045.

It is an arithmetic number, because the mean of its divisors is an integer number (4732520).

Almost surely, 2^74952639 is an apocalyptic number.

74952639 is a deficient number, since it is larger than the sum of its proper divisors (38627841).

74952639 is a wasteful number, since it uses less digits than its factorization.

74952639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4879 (or 4876 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 74952639 is about 8657.5192174202. The cubic root of 74952639 is about 421.6275454826.

The spelling of 74952639 in words is "seventy-four million, nine hundred fifty-two thousand, six hundred thirty-nine".