661696462 has 16 divisors (see below), whose sum is σ = 1136518272. Its totient is φ = 283038840.

The previous prime is 661696459. The next prime is 661696517. The reversal of 661696462 is 264696166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37864 + ... + 52507.

It is an arithmetic number, because the mean of its divisors is an integer number (71032392).

Almost surely, 2^661696462 is an apocalyptic number.

661696462 is a deficient number, since it is larger than the sum of its proper divisors (474821810).

661696462 is a wasteful number, since it uses less digits than its factorization.

661696462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90903.

The product of its digits is 559872, while the sum is 46.

The square root of 661696462 is about 25723.4613145276. The cubic root of 661696462 is about 871.4041104279.

The spelling of 661696462 in words is "six hundred sixty-one million, six hundred ninety-six thousand, four hundred sixty-two".