1655608404 has 48 divisors (see below), whose sum is σ = 3909814272. Its totient is φ = 545220192.

The previous prime is 1655608397. The next prime is 1655608433. The reversal of 1655608404 is 4048065561.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 620377 + ... + 623039.

It is an arithmetic number, because the mean of its divisors is an integer number (81454464).

Almost surely, 2^1655608404 is an apocalyptic number.

It is an amenable number.

1655608404 is an abundant number, since it is smaller than the sum of its proper divisors (2254205868).

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

1655608404 is a wasteful number, since it uses less digits than its factorization.

1655608404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276 (or 3274 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 1655608404 is about 40689.1681409193. The cubic root of 1655608404 is about 1183.0030765911.

The spelling of 1655608404 in words is "one billion, six hundred fifty-five million, six hundred eight thousand, four hundred four".