1657606460 has 12 divisors (see below), whose sum is σ = 3480973608. Its totient is φ = 663042576.

The previous prime is 1657606453. The next prime is 1657606463. The reversal of 1657606460 is 646067561.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1657606463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41440142 + ... + 41440181.

It is an arithmetic number, because the mean of its divisors is an integer number (290081134).

Almost surely, 2^1657606460 is an apocalyptic number.

1657606460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1657606460 is an abundant number, since it is smaller than the sum of its proper divisors (1823367148).

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

1657606460 is a wasteful number, since it uses less digits than its factorization.

1657606460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82880332 (or 82880330 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 1657606460 is about 40713.7134145241. The cubic root of 1657606460 is about 1183.4787841224.

The spelling of 1657606460 in words is "one billion, six hundred fifty-seven million, six hundred six thousand, four hundred sixty".