75656740 has 24 divisors (see below), whose sum is σ = 164005632. Its totient is φ = 29286240.

The previous prime is 75656723. The next prime is 75656747. The reversal of 75656740 is 4765657.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 75656693 and 75656702.

It is not an unprimeable number, because it can be changed into a prime (75656747) 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, 60394 + ... + 61633.

It is an arithmetic number, because the mean of its divisors is an integer number (6833568).

Almost surely, 2^75656740 is an apocalyptic number.

It is an amenable number.

75656740 is an abundant number, since it is smaller than the sum of its proper divisors (88348892).

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

75656740 is a wasteful number, since it uses less digits than its factorization.

75656740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122067 (or 122065 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 40.

The square root of 75656740 is about 8698.0882957119. The cubic root of 75656740 is about 422.9436815258.

The spelling of 75656740 in words is "seventy-five million, six hundred fifty-six thousand, seven hundred forty".