1622664404 has 12 divisors (see below), whose sum is σ = 2840201364. Its totient is φ = 811178304.

The previous prime is 1622664401. The next prime is 1622664409. The reversal of 1622664404 is 4044662261.

It can be written as a sum of positive squares in 2 ways, for example, as 758892304 + 863772100 = 27548^2 + 29390^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622664401) 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, 12857 + ... + 58400.

It is an arithmetic number, because the mean of its divisors is an integer number (236683447).

Almost surely, 2^1622664404 is an apocalyptic number.

It is an amenable number.

1622664404 is a deficient number, since it is larger than the sum of its proper divisors (1217536960).

1622664404 is a wasteful number, since it uses less digits than its factorization.

1622664404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76954 (or 76952 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 1622664404 is about 40282.3088216155. The cubic root of 1622664404 is about 1175.1038155443.

The spelling of 1622664404 in words is "one billion, six hundred twenty-two million, six hundred sixty-four thousand, four hundred four".