641479746 has 32 divisors (see below), whose sum is σ = 1304650368. Its totient is φ = 210228480.

The previous prime is 641479733. The next prime is 641479771. The reversal of 641479746 is 647974146.

It is a super-2 number, since 2×641479746² = 822992529056449032, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641479695 and 641479704.

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, 167226 + ... + 171018.

It is an arithmetic number, because the mean of its divisors is an integer number (40770324).

Almost surely, 2^641479746 is an apocalyptic number.

641479746 is an abundant number, since it is smaller than the sum of its proper divisors (663170622).

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

641479746 is a wasteful number, since it uses less digits than its factorization.

641479746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4266.

The product of its digits is 1016064, while the sum is 48.

The square root of 641479746 is about 25327.4504441327. The cubic root of 641479746 is about 862.4375348166.

The spelling of 641479746 in words is "six hundred forty-one million, four hundred seventy-nine thousand, seven hundred forty-six".