561268610 has 32 divisors (see below), whose sum is σ = 1194428160. Its totient is φ = 185798592.

The previous prime is 561268601. The next prime is 561268613. The reversal of 561268610 is 16862165.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (561268613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136214 + ... + 140273.

It is an arithmetic number, because the mean of its divisors is an integer number (37325880).

Almost surely, 2^561268610 is an apocalyptic number.

561268610 is an abundant number, since it is smaller than the sum of its proper divisors (633159550).

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

561268610 is a wasteful number, since it uses less digits than its factorization.

561268610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276530.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 561268610 is about 23691.1082476105. The cubic root of 561268610 is about 824.8790076620.

The spelling of 561268610 in words is "five hundred sixty-one million, two hundred sixty-eight thousand, six hundred ten".