86667651 has 24 divisors (see below), whose sum is σ = 148372224. Its totient is φ = 49523400.

The previous prime is 86667629. The next prime is 86667673. The reversal of 86667651 is 15676668.

It is an interprime number because it is at equal distance from previous prime (86667629) and next prime (86667673).

It is not a de Polignac number, because 86667651 - 2⁵ = 86667619 is a prime.

It is a super-2 number, since 2×86667651² = 15022563459715602, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86667597 and 86667606.

It is not an unprimeable number, because it can be changed into a prime (86667601) 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, 23775 + ... + 27176.

It is an arithmetic number, because the mean of its divisors is an integer number (6182176).

Almost surely, 2^86667651 is an apocalyptic number.

86667651 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

86667651 is a deficient number, since it is larger than the sum of its proper divisors (61704573).

86667651 is an equidigital number, since it uses as much as digits as its factorization.

86667651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50973 (or 50961 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 86667651 is about 9309.5462295431. The cubic root of 86667651 is about 442.5398068182.

The spelling of 86667651 in words is "eighty-six million, six hundred sixty-seven thousand, six hundred fifty-one".