6906400902 has 32 divisors (see below), whose sum is σ = 15352116960. Its totient is φ = 2301449760.

The previous prime is 6906400861. The next prime is 6906400913. The reversal of 6906400902 is 2090046096.

6906400902 is a `hidden beast` number, since 6 + 9 + 0 + 640 + 0 + 9 + 0 + 2 = 666.

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, 184452 + ... + 218712.

It is an arithmetic number, because the mean of its divisors is an integer number (479753655).

Almost surely, 2^6906400902 is an apocalyptic number.

6906400902 is an abundant number, since it is smaller than the sum of its proper divisors (8445716058).

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

6906400902 is a wasteful number, since it uses less digits than its factorization.

6906400902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38005 (or 37999 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 6906400902 is about 83104.7586002149. The cubic root of 6906400902 is about 1904.3667707495.

Adding to 6906400902 its reverse (2090046096), we get a palindrome (8996446998).

The spelling of 6906400902 in words is "six billion, nine hundred six million, four hundred thousand, nine hundred two".