1623666612 has 24 divisors (see below), whose sum is σ = 3789809856. Its totient is φ = 541043008.

The previous prime is 1623666593. The next prime is 1623666643. The reversal of 1623666612 is 2166663261.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18313 + ... + 59855.

It is an arithmetic number, because the mean of its divisors is an integer number (157908744).

Almost surely, 2^1623666612 is an apocalyptic number.

1623666612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1623666612 is an abundant number, since it is smaller than the sum of its proper divisors (2166143244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1623666612 is a wasteful number, since it uses less digits than its factorization.

1623666612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44807 (or 44805 counting only the distinct ones).

The product of its digits is 93312, while the sum is 39.

The square root of 1623666612 is about 40294.7467047505. The cubic root of 1623666612 is about 1175.3456926414.

The spelling of 1623666612 in words is "one billion, six hundred twenty-three million, six hundred sixty-six thousand, six hundred twelve".