561668502 has 8 divisors (see below), whose sum is σ = 1123337016. Its totient is φ = 187222832.

The previous prime is 561668501. The next prime is 561668551. The reversal of 561668502 is 205866165.

It is a sphenic number, since it is the product of 3 distinct primes.

561668502 is an admirable number.

It is a super-2 number, since 2×561668502² = 630943012277848008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561668501) 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, 46805703 + ... + 46805714.

It is an arithmetic number, because the mean of its divisors is an integer number (140417127).

Almost surely, 2^561668502 is an apocalyptic number.

561668502 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

561668502 is a wasteful number, since it uses less digits than its factorization.

561668502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93611422.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 561668502 is about 23699.5464513564. The cubic root of 561668502 is about 825.0748640970.

The spelling of 561668502 in words is "five hundred sixty-one million, six hundred sixty-eight thousand, five hundred two".