671620662 has 24 divisors (see below), whose sum is σ = 1455792624. Its totient is φ = 223779024.

The previous prime is 671620661. The next prime is 671620679. The reversal of 671620662 is 266026176.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671620661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45828 + ... + 58680.

It is an arithmetic number, because the mean of its divisors is an integer number (60658026).

Almost surely, 2^671620662 is an apocalyptic number.

671620662 is an abundant number, since it is smaller than the sum of its proper divisors (784171962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671620662 is a wasteful number, since it uses less digits than its factorization.

671620662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15764 (or 15761 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 671620662 is about 25915.6451202744. The cubic root of 671620662 is about 875.7389836592.

The spelling of 671620662 in words is "six hundred seventy-one million, six hundred twenty thousand, six hundred sixty-two".