74597940 has 36 divisors (see below), whose sum is σ = 226280964. Its totient is φ = 19892736.

The previous prime is 74597927. The next prime is 74597969. The reversal of 74597940 is 4979547.

It can be written as a sum of positive squares in 2 ways, for example, as 24980004 + 49617936 = 4998^2 + 7044^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

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 11 ways as a sum of consecutive naturals, for example, 207037 + ... + 207396.

Almost surely, 2^74597940 is an apocalyptic number.

It is an amenable number.

74597940 is an abundant number, since it is smaller than the sum of its proper divisors (151683024).

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

74597940 is a wasteful number, since it uses less digits than its factorization.

74597940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414448 (or 414443 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 74597940 is about 8637.0098992649. The cubic root of 74597940 is about 420.9614030586.

The spelling of 74597940 in words is "seventy-four million, five hundred ninety-seven thousand, nine hundred forty".