86761657 has 12 divisors (see below), whose sum is σ = 92240100. Its totient is φ = 81592992.

The previous prime is 86761651. The next prime is 86761667. The reversal of 86761657 is 75616768.

It can be written as a sum of positive squares in 2 ways, for example, as 30151081 + 56610576 = 5491^2 + 7524^2 .

It is not a de Polignac number, because 86761657 - 2¹¹ = 86759609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86761651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52983 + ... + 54595.

It is an arithmetic number, because the mean of its divisors is an integer number (7686675).

Almost surely, 2^86761657 is an apocalyptic number.

It is an amenable number.

86761657 is a deficient number, since it is larger than the sum of its proper divisors (5478443).

86761657 is a wasteful number, since it uses less digits than its factorization.

86761657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800 (or 1781 counting only the distinct ones).

The product of its digits is 423360, while the sum is 46.

The square root of 86761657 is about 9314.5937646255. The cubic root of 86761657 is about 442.6997525587.

The spelling of 86761657 in words is "eighty-six million, seven hundred sixty-one thousand, six hundred fifty-seven".