1406624 has 24 divisors (see below), whose sum is σ = 2800980. Its totient is φ = 695296.

The previous prime is 1406617. The next prime is 1406633. The reversal of 1406624 is 4266041.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1123600 + 283024 = 1060^2 + 532^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1406624.

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, 3422 + ... + 3810.

2^1406624 is an apocalyptic number.

It is an amenable number.

1406624 is a deficient number, since it is larger than the sum of its proper divisors (1394356).

1406624 is a wasteful number, since it uses less digits than its factorization.

1406624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1406624 is about 1186.0118043257. The cubic root of 1406624 is about 112.0450499043.

The spelling of 1406624 in words is "one million, four hundred six thousand, six hundred twenty-four".