81465676 has 12 divisors (see below), whose sum is σ = 143591560. Its totient is φ = 40439520.

The previous prime is 81465667. The next prime is 81465677. The reversal of 81465676 is 67656418.

It is a happy number.

It is a super-2 number, since 2×81465676² = 13273312732273952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (81465677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72705 + ... + 73816.

Almost surely, 2^81465676 is an apocalyptic number.

It is an amenable number.

81465676 is a deficient number, since it is larger than the sum of its proper divisors (62125884).

81465676 is a wasteful number, since it uses less digits than its factorization.

81465676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146664 (or 146662 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 81465676 is about 9025.8338118979. The cubic root of 81465676 is about 433.5024489156.

The spelling of 81465676 in words is "eighty-one million, four hundred sixty-five thousand, six hundred seventy-six".