407620690 has 16 divisors (see below), whose sum is σ = 733947480. Its totient is φ = 162997120.

The previous prime is 407620667. The next prime is 407620757. The reversal of 407620690 is 96026704.

It can be written as a sum of positive squares in 4 ways, for example, as 406949929 + 670761 = 20173^2 + 819^2 .

It is a super-2 number, since 2×407620690² = 332309253832152200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56910 + ... + 63670.

Almost surely, 2^407620690 is an apocalyptic number.

407620690 is a deficient number, since it is larger than the sum of its proper divisors (326326790).

407620690 is a wasteful number, since it uses less digits than its factorization.

407620690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12797.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 407620690 is about 20189.6183718266. The cubic root of 407620690 is about 741.4560387174.

The spelling of 407620690 in words is "four hundred seven million, six hundred twenty thousand, six hundred ninety".