81935596 has 12 divisors (see below), whose sum is σ = 143459680. Its totient is φ = 40947120.

The previous prime is 81935593. The next prime is 81935603. The reversal of 81935596 is 69553918.

It is a hoax number, since the sum of its digits (46) 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 (81935593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6850 + ... + 14518.

Almost surely, 2^81935596 is an apocalyptic number.

It is an amenable number.

81935596 is a deficient number, since it is larger than the sum of its proper divisors (61524084).

81935596 is a wasteful number, since it uses less digits than its factorization.

81935596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10344 (or 10342 counting only the distinct ones).

The product of its digits is 291600, while the sum is 46.

The square root of 81935596 is about 9051.8283236040. The cubic root of 81935596 is about 434.3343781414.

The spelling of 81935596 in words is "eighty-one million, nine hundred thirty-five thousand, five hundred ninety-six".