74949620 has 24 divisors (see below), whose sum is σ = 158217864. Its totient is φ = 29822976.

The previous prime is 74949619. The next prime is 74949629. The reversal of 74949620 is 2694947.

It can be written as a sum of positive squares in 4 ways, for example, as 2427364 + 72522256 = 1558^2 + 8516^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74949629) 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, 5849 + ... + 13568.

It is an arithmetic number, because the mean of its divisors is an integer number (6592411).

Almost surely, 2^74949620 is an apocalyptic number.

It is an amenable number.

74949620 is an abundant number, since it is smaller than the sum of its proper divisors (83268244).

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

74949620 is a wasteful number, since it uses less digits than its factorization.

74949620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19619 (or 19617 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 74949620 is about 8657.3448585580. The cubic root of 74949620 is about 421.6218845271.

The spelling of 74949620 in words is "seventy-four million, nine hundred forty-nine thousand, six hundred twenty".