407656 has 8 divisors (see below), whose sum is σ = 764370. Its totient is φ = 203824.

The previous prime is 407651. The next prime is 407657. The reversal of 407656 is 656704.

407656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 285156 + 122500 = 534^2 + 350^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (407651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25471 + ... + 25486.

2⁴⁰⁷⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

407656 is a deficient number, since it is larger than the sum of its proper divisors (356714).

407656 is a wasteful number, since it uses less digits than its factorization.

407656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50963 (or 50959 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 407656 is about 638.4794436785. The cubic root of 407656 is about 74.1477447556.

The spelling of 407656 in words is "four hundred seven thousand, six hundred fifty-six".