1401656 has 16 divisors (see below), whose sum is σ = 2642640. Its totient is φ = 696960.

The previous prime is 1401641. The next prime is 1401679. The reversal of 1401656 is 6561041.

It is a congruent number.

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, 1565 + ... + 2291.

It is an arithmetic number, because the mean of its divisors is an integer number (165165).

2^1401656 is an apocalyptic number.

It is an amenable number.

1401656 is a deficient number, since it is larger than the sum of its proper divisors (1240984).

1401656 is a wasteful number, since it uses less digits than its factorization.

1401656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974 (or 970 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1401656 is about 1183.9155375279. The cubic root of 1401656 is about 111.9129851351.

Adding to 1401656 its reverse (6561041), we get a palindrome (7962697).

The spelling of 1401656 in words is "one million, four hundred one thousand, six hundred fifty-six".