1396624 has 20 divisors (see below), whose sum is σ = 2773260. Its totient is φ = 680960.

The previous prime is 1396613. The next prime is 1396627. The reversal of 1396624 is 4266931.

It can be written as a sum of positive squares in 2 ways, for example, as 186624 + 1210000 = 432^2 + 1100^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409 + ... + 1720.

It is an arithmetic number, because the mean of its divisors is an integer number (138663).

2^1396624 is an apocalyptic number.

It is an amenable number.

1396624 is a deficient number, since it is larger than the sum of its proper divisors (1376636).

1396624 is a wasteful number, since it uses less digits than its factorization.

1396624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178 (or 2172 counting only the distinct ones).

The product of its digits is 7776, while the sum is 31.

The square root of 1396624 is about 1181.7884751511. The cubic root of 1396624 is about 111.7789005490.

The spelling of 1396624 in words is "one million, three hundred ninety-six thousand, six hundred twenty-four".