85715651 has 24 divisors (see below), whose sum is σ = 104471424. Its totient is φ = 70035840.

The previous prime is 85715629. The next prime is 85715659. The reversal of 85715651 is 15651758.

It is a happy number.

It is not a de Polignac number, because 85715651 - 2²⁶ = 18606787 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85715659) 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, 110501 + ... + 111273.

It is an arithmetic number, because the mean of its divisors is an integer number (4352976).

Almost surely, 2^85715651 is an apocalyptic number.

85715651 is a deficient number, since it is larger than the sum of its proper divisors (18755773).

85715651 is a wasteful number, since it uses less digits than its factorization.

85715651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891 (or 884 counting only the distinct ones).

The product of its digits is 42000, while the sum is 38.

The square root of 85715651 is about 9258.2747312877. The cubic root of 85715651 is about 440.9134792891.

The spelling of 85715651 in words is "eighty-five million, seven hundred fifteen thousand, six hundred fifty-one".