75661475 has 24 divisors (see below), whose sum is σ = 101243520. Its totient is φ = 55877120.

The previous prime is 75661471. The next prime is 75661517. The reversal of 75661475 is 57416657.

It is not a de Polignac number, because 75661475 - 2² = 75661471 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (75661471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20846 + ... + 24204.

It is an arithmetic number, because the mean of its divisors is an integer number (4218480).

Almost surely, 2^75661475 is an apocalyptic number.

75661475 is a deficient number, since it is larger than the sum of its proper divisors (25582045).

75661475 is a wasteful number, since it uses less digits than its factorization.

75661475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3439 (or 3434 counting only the distinct ones).

The product of its digits is 176400, while the sum is 41.

The square root of 75661475 is about 8698.3604776992. The cubic root of 75661475 is about 422.9525046946.

The spelling of 75661475 in words is "seventy-five million, six hundred sixty-one thousand, four hundred seventy-five".