80951967 has 20 divisors (see below), whose sum is σ = 124201176. Its totient is φ = 52507440.

The previous prime is 80951947. The next prime is 80951971. The reversal of 80951967 is 76915908.

It is not a de Polignac number, because 80951967 - 2⁶ = 80951903 is a prime.

It is a super-2 number, since 2×80951967² = 13106441922338178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80951947) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10509 + ... + 16502.

Almost surely, 2^80951967 is an apocalyptic number.

80951967 is a deficient number, since it is larger than the sum of its proper divisors (43249209).

80951967 is a wasteful number, since it uses less digits than its factorization.

80951967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27060 (or 27051 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 80951967 is about 8997.3311042775. The cubic root of 80951967 is about 432.5893287816.

It can be divided in two parts, 80951 and 967, that added together give a palindrome (81918).

The spelling of 80951967 in words is "eighty million, nine hundred fifty-one thousand, nine hundred sixty-seven".