566253990 has 80 divisors (see below), whose sum is σ = 1538504352. Its totient is φ = 149423616.

The previous prime is 566253983. The next prime is 566254001. The reversal of 566253990 is 99352665.

566253990 is a `hidden beast` number, since 56 + 62 + 539 + 9 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 74967 + ... + 82173.

Almost surely, 2^566253990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 566253990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (769252176).

566253990 is an abundant number, since it is smaller than the sum of its proper divisors (972250362).

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

566253990 is a wasteful number, since it uses less digits than its factorization.

566253990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7323 (or 7314 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 45.

The square root of 566253990 is about 23796.0919060252. The cubic root of 566253990 is about 827.3140980032.

The spelling of 566253990 in words is "five hundred sixty-six million, two hundred fifty-three thousand, nine hundred ninety".