75691656 has 48 divisors (see below), whose sum is σ = 207820860. Its totient is φ = 24883200.

The previous prime is 75691613. The next prime is 75691661. The reversal of 75691656 is 65619657.

It can be written as a sum of positive squares in 2 ways, for example, as 63202500 + 12489156 = 7950^2 + 3534^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1945 + ... + 12456.

Almost surely, 2^75691656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75691656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103910430).

75691656 is an abundant number, since it is smaller than the sum of its proper divisors (132129204).

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

75691656 is a wasteful number, since it uses less digits than its factorization.

75691656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14486 (or 14479 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 75691656 is about 8700.0951718932. The cubic root of 75691656 is about 423.0087351280.

The spelling of 75691656 in words is "seventy-five million, six hundred ninety-one thousand, six hundred fifty-six".