406606724 has 12 divisors (see below), whose sum is σ = 723227148. Its totient is φ = 199970400.

The previous prime is 406606699. The next prime is 406606747. The reversal of 406606724 is 427606604.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 218093824 + 188512900 = 14768^2 + 13730^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 832967 + ... + 833454.

It is an arithmetic number, because the mean of its divisors is an integer number (60268929).

Almost surely, 2^406606724 is an apocalyptic number.

It is an amenable number.

406606724 is a deficient number, since it is larger than the sum of its proper divisors (316620424).

406606724 is a wasteful number, since it uses less digits than its factorization.

406606724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666486 (or 1666484 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 406606724 is about 20164.4916623256. The cubic root of 406606724 is about 740.8407318256.

The spelling of 406606724 in words is "four hundred six million, six hundred six thousand, seven hundred twenty-four".