81460467 has 72 divisors (see below), whose sum is σ = 141639680. Its totient is φ = 44906400.

The previous prime is 81460459. The next prime is 81460469. The reversal of 81460467 is 76406418.

It is not a de Polignac number, because 81460467 - 2³ = 81460459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81460469) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 641358 + ... + 641484.

Almost surely, 2^81460467 is an apocalyptic number.

81460467 is a deficient number, since it is larger than the sum of its proper divisors (60179213).

81460467 is a wasteful number, since it uses less digits than its factorization.

81460467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 81460467 is about 9025.5452466873. The cubic root of 81460467 is about 433.4932091863.

The spelling of 81460467 in words is "eighty-one million, four hundred sixty thousand, four hundred sixty-seven".