75661474 has 16 divisors (see below), whose sum is σ = 129921408. Its totient is φ = 32372352.

The previous prime is 75661471. The next prime is 75661517. The reversal of 75661474 is 47416657.

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

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4882 + ... + 13234.

It is an arithmetic number, because the mean of its divisors is an integer number (8120088).

Almost surely, 2^75661474 is an apocalyptic number.

75661474 is a deficient number, since it is larger than the sum of its proper divisors (54259934).

75661474 is a wasteful number, since it uses less digits than its factorization.

75661474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9009.

The product of its digits is 141120, while the sum is 40.

The square root of 75661474 is about 8698.3604202171. The cubic root of 75661474 is about 422.9525028312.

The spelling of 75661474 in words is "seventy-five million, six hundred sixty-one thousand, four hundred seventy-four".