2005655408 has 20 divisors (see below), whose sum is σ = 3886819680. Its totient is φ = 1002605184.

The previous prime is 2005655387. The next prime is 2005655429. The reversal of 2005655408 is 8045565002.

It is an interprime number because it is at equal distance from previous prime (2005655387) and next prime (2005655429).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79433 + ... + 101591.

It is an arithmetic number, because the mean of its divisors is an integer number (194340984).

Almost surely, 2^2005655408 is an apocalyptic number.

It is an amenable number.

2005655408 is a deficient number, since it is larger than the sum of its proper divisors (1881164272).

2005655408 is a wasteful number, since it uses less digits than its factorization.

2005655408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27824 (or 27818 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

The square root of 2005655408 is about 44784.5442982286. The cubic root of 2005655408 is about 1261.1074935569.

The spelling of 2005655408 in words is "two billion, five million, six hundred fifty-five thousand, four hundred eight".