75459640 has 32 divisors (see below), whose sum is σ = 178722000. Its totient is φ = 28594944.

The previous prime is 75459599. The next prime is 75459647. The reversal of 75459640 is 4695457.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 75459593 and 75459602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75459647) 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, 48885 + ... + 50404.

Almost surely, 2^75459640 is an apocalyptic number.

It is an amenable number.

75459640 is an abundant number, since it is smaller than the sum of its proper divisors (103262360).

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

75459640 is a wasteful number, since it uses less digits than its factorization.

75459640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99319 (or 99315 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 75459640 is about 8686.7508310070. The cubic root of 75459640 is about 422.5760795736.

The spelling of 75459640 in words is "seventy-five million, four hundred fifty-nine thousand, six hundred forty".