501690404 has 6 divisors (see below), whose sum is σ = 877958214. Its totient is φ = 250845200.

The previous prime is 501690389. The next prime is 501690461. The reversal of 501690404 is 404096105.

It can be written as a sum of positive squares in only one way, i.e., 492928804 + 8761600 = 22202^2 + 2960^2 .

It is a super-2 number, since 2×501690404² = 503386522931366432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62711297 + ... + 62711304.

It is an arithmetic number, because the mean of its divisors is an integer number (146326369).

Almost surely, 2^501690404 is an apocalyptic number.

It is an amenable number.

501690404 is a deficient number, since it is larger than the sum of its proper divisors (376267810).

501690404 is a wasteful number, since it uses less digits than its factorization.

501690404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125422605 (or 125422603 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 501690404 is about 22398.4464639850. The cubic root of 501690404 is about 794.5939695815.

The spelling of 501690404 in words is "five hundred one million, six hundred ninety thousand, four hundred four".