6401658770 has 64 divisors (see below), whose sum is σ = 13008328704. Its totient is φ = 2250547200.

The previous prime is 6401658763. The next prime is 6401658773. The reversal of 6401658770 is 778561046.

It is not an unprimeable number, because it can be changed into a prime (6401658773) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 661970 + ... + 671570.

It is an arithmetic number, because the mean of its divisors is an integer number (203255136).

Almost surely, 2^6401658770 is an apocalyptic number.

6401658770 is an abundant number, since it is smaller than the sum of its proper divisors (6606669934).

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

6401658770 is a wasteful number, since it uses less digits than its factorization.

6401658770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9867.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 6401658770 is about 80010.3666408297. The cubic root of 6401658770 is about 1856.7959222623.

The spelling of 6401658770 in words is "six billion, four hundred one million, six hundred fifty-eight thousand, seven hundred seventy".