1664286552 has 48 divisors (see below), whose sum is σ = 4515558840. Its totient is φ = 553763328.

The previous prime is 1664286523. The next prime is 1664286557. The reversal of 1664286552 is 2556824661.

1664286552 is a `hidden beast` number, since 16 + 6 + 4 + 2 + 86 + 552 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1664286498 and 1664286507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664286557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20008 + ... + 61064.

Almost surely, 2^1664286552 is an apocalyptic number.

1664286552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1664286552 is an abundant number, since it is smaller than the sum of its proper divisors (2851272288).

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

1664286552 is a wasteful number, since it uses less digits than its factorization.

1664286552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41632 (or 41625 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 1664286552 is about 40795.6682994653. The cubic root of 1664286552 is about 1185.0664450271.

The spelling of 1664286552 in words is "one billion, six hundred sixty-four million, two hundred eighty-six thousand, five hundred fifty-two".