610505405604 has 36 divisors (see below), whose sum is σ = 1564362031596. Its totient is φ = 200714105088.

The previous prime is 610505405603. The next prime is 610505405681. The reversal of 610505405604 is 406504505016.

610505405604 is a `hidden beast` number, since 6 + 1 + 0 + 5 + 0 + 5 + 40 + 5 + 604 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 339947302500 + 270558103104 = 583050^2 + 520152^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (610505405603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116151369 + ... + 116156624.

Almost surely, 2^610505405604 is an apocalyptic number.

It is an amenable number.

610505405604 is an abundant number, since it is smaller than the sum of its proper divisors (953856625992).

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

610505405604 is a wasteful number, since it uses less digits than its factorization.

610505405604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232308076 (or 232308071 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 610505405604 in words is "six hundred ten billion, five hundred five million, four hundred five thousand, six hundred four".