610626564 has 18 divisors (see below), whose sum is σ = 1543528350. Its totient is φ = 203542176.

The previous prime is 610626557. The next prime is 610626589. The reversal of 610626564 is 465626016.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 426752964 + 183873600 = 20658^2 + 13560^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 16961849 = 610626564 / (6 + 1 + 0 + 6 + 2 + 6 + 5 + 6 + 4).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8480889 + ... + 8480960.

It is an arithmetic number, because the mean of its divisors is an integer number (85751575).

Almost surely, 2^610626564 is an apocalyptic number.

It is an amenable number.

610626564 is an abundant number, since it is smaller than the sum of its proper divisors (932901786).

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

610626564 is a wasteful number, since it uses less digits than its factorization.

610626564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16961859 (or 16961854 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 610626564 is about 24710.8592323294. The cubic root of 610626564 is about 848.3828834189.

The spelling of 610626564 in words is "six hundred ten million, six hundred twenty-six thousand, five hundred sixty-four".