610689408 has 64 divisors (see below), whose sum is σ = 1853886720. Its totient is φ = 174481920.

The previous prime is 610689407. The next prime is 610689413. The reversal of 610689408 is 804986016.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 610689408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610689407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110908 + ... + 116283.

It is an arithmetic number, because the mean of its divisors is an integer number (28966980).

Almost surely, 2^610689408 is an apocalyptic number.

It is an amenable number.

610689408 is an abundant number, since it is smaller than the sum of its proper divisors (1243197312).

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

610689408 is a wasteful number, since it uses less digits than its factorization.

610689408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227215 (or 227203 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 610689408 is about 24712.1307863163. The cubic root of 610689408 is about 848.4119868285.

The spelling of 610689408 in words is "six hundred ten million, six hundred eighty-nine thousand, four hundred eight".