610664690 has 16 divisors (see below), whose sum is σ = 1099630080. Its totient is φ = 244169520.

The previous prime is 610664683. The next prime is 610664699. The reversal of 610664690 is 96466016.

It is a super-2 number, since 2×610664690² = 745822727225592200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (610664699) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 18185 + ... + 39395.

It is an arithmetic number, because the mean of its divisors is an integer number (68726880).

Almost surely, 2^610664690 is an apocalyptic number.

610664690 is a deficient number, since it is larger than the sum of its proper divisors (488965390).

610664690 is a wasteful number, since it uses less digits than its factorization.

610664690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24097.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 610664690 is about 24711.6306625038. The cubic root of 610664690 is about 848.4005400220.

It can be divided in two parts, 61066 and 4690, that added together give a palindrome (65756).

The spelling of 610664690 in words is "six hundred ten million, six hundred sixty-four thousand, six hundred ninety".