81608462 has 32 divisors (see below), whose sum is σ = 138378240. Its totient is φ = 35814240.

The previous prime is 81608459. The next prime is 81608473. The reversal of 81608462 is 26480618.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142637 + ... + 143207.

It is an arithmetic number, because the mean of its divisors is an integer number (4324320).

Almost surely, 2^81608462 is an apocalyptic number.

81608462 is a deficient number, since it is larger than the sum of its proper divisors (56769778).

81608462 is a wasteful number, since it uses less digits than its factorization.

81608462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 81608462 is about 9033.7401999393. The cubic root of 81608462 is about 433.7555696395.

The spelling of 81608462 in words is "eighty-one million, six hundred eight thousand, four hundred sixty-two".