86620631 has 8 divisors (see below), whose sum is σ = 87703200. Its totient is φ = 85542912.

The previous prime is 86620621. The next prime is 86620643. The reversal of 86620631 is 13602668.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86620631 - 2¹⁴ = 86604247 is a prime.

It is a super-2 number, since 2×86620631² = 15006267429676322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86620621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45311 + ... + 47183.

It is an arithmetic number, because the mean of its divisors is an integer number (10962900).

Almost surely, 2^86620631 is an apocalyptic number.

86620631 is a deficient number, since it is larger than the sum of its proper divisors (1082569).

86620631 is a wasteful number, since it uses less digits than its factorization.

86620631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2425.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 86620631 is about 9307.0205221650. The cubic root of 86620631 is about 442.4597616278.

The spelling of 86620631 in words is "eighty-six million, six hundred twenty thousand, six hundred thirty-one".