1664560315 has 32 divisors (see below), whose sum is σ = 2244439296. Its totient is φ = 1174642560.

The previous prime is 1664560267. The next prime is 1664560361. The reversal of 1664560315 is 5130654661.

It is not a de Polignac number, because 1664560315 - 2⁷ = 1664560187 is a prime.

It is a super-2 number, since 2×1664560315² = 5541522084545798450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 369064 + ... + 373546.

It is an arithmetic number, because the mean of its divisors is an integer number (70138728).

Almost surely, 2^1664560315 is an apocalyptic number.

1664560315 is a deficient number, since it is larger than the sum of its proper divisors (579878981).

1664560315 is a wasteful number, since it uses less digits than its factorization.

1664560315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4699.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 1664560315 is about 40799.0234564505. The cubic root of 1664560315 is about 1185.1314197271.

The spelling of 1664560315 in words is "one billion, six hundred sixty-four million, five hundred sixty thousand, three hundred fifteen".