75566540 has 24 divisors (see below), whose sum is σ = 181360032. Its totient is φ = 25908480.

The previous prime is 75566531. The next prime is 75566587. The reversal of 75566540 is 4566557.

It is a junction number, because it is equal to n+sod(n) for n = 75566494 and 75566503.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269741 + ... + 270020.

It is an arithmetic number, because the mean of its divisors is an integer number (7556668).

Almost surely, 2^75566540 is an apocalyptic number.

75566540 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

75566540 is an abundant number, since it is smaller than the sum of its proper divisors (105793492).

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

75566540 is a wasteful number, since it uses less digits than its factorization.

75566540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539777 (or 539775 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 38.

The square root of 75566540 is about 8692.9017019635. The cubic root of 75566540 is about 422.7755330741.

The spelling of 75566540 in words is "seventy-five million, five hundred sixty-six thousand, five hundred forty".