920613408 has 96 divisors (see below), whose sum is σ = 2839136832. Its totient is φ = 257510400.

The previous prime is 920613389. The next prime is 920613413. The reversal of 920613408 is 804316029.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 19803 + ... + 47258.

It is an arithmetic number, because the mean of its divisors is an integer number (29574342).

Almost surely, 2^920613408 is an apocalyptic number.

It is an amenable number.

920613408 is an abundant number, since it is smaller than the sum of its proper divisors (1918523424).

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

920613408 is a wasteful number, since it uses less digits than its factorization.

920613408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67098 (or 67090 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 920613408 is about 30341.6118227097. The cubic root of 920613408 is about 972.8049353577.

The spelling of 920613408 in words is "nine hundred twenty million, six hundred thirteen thousand, four hundred eight".