1665056524 has 24 divisors (see below), whose sum is σ = 2937160800. Its totient is φ = 825882624.

The previous prime is 1665056521. The next prime is 1665056537. The reversal of 1665056524 is 4256505661.

It is a super-2 number, since 2×1665056524² = 5544826456229925152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1665056521) 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, 685977 + ... + 688399.

It is an arithmetic number, because the mean of its divisors is an integer number (122381700).

Almost surely, 2^1665056524 is an apocalyptic number.

It is an amenable number.

1665056524 is a deficient number, since it is larger than the sum of its proper divisors (1272104276).

1665056524 is a wasteful number, since it uses less digits than its factorization.

1665056524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3729 (or 3727 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The square root of 1665056524 is about 40805.1041415164. The cubic root of 1665056524 is about 1185.2491714332.

The spelling of 1665056524 in words is "one billion, six hundred sixty-five million, fifty-six thousand, five hundred twenty-four".