1656607332 has 24 divisors (see below), whose sum is σ = 3868452000. Its totient is φ = 551768896.

The previous prime is 1656607331. The next prime is 1656607349. The reversal of 1656607332 is 2337066561.

It is not an unprimeable number, because it can be changed into a prime (1656607331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38082 + ... + 69017.

It is an arithmetic number, because the mean of its divisors is an integer number (161185500).

Almost surely, 2^1656607332 is an apocalyptic number.

1656607332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1656607332 is an abundant number, since it is smaller than the sum of its proper divisors (2211844668).

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

1656607332 is a wasteful number, since it uses less digits than its factorization.

1656607332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108395 (or 108393 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 39.

The square root of 1656607332 is about 40701.4413995377. The cubic root of 1656607332 is about 1183.2409543613.

The spelling of 1656607332 in words is "one billion, six hundred fifty-six million, six hundred seven thousand, three hundred thirty-two".