623947212 has 72 divisors (see below), whose sum is σ = 1869294336. Its totient is φ = 178268688.

The previous prime is 623947201. The next prime is 623947253. The reversal of 623947212 is 212749326.

623947212 is a `hidden beast` number, since 623 + 9 + 4 + 7 + 21 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 23 ways as a sum of consecutive naturals, for example, 39048 + ... + 52655.

Almost surely, 2^623947212 is an apocalyptic number.

It is an amenable number.

623947212 is an abundant number, since it is smaller than the sum of its proper divisors (1245347124).

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

623947212 is a wasteful number, since it uses less digits than its factorization.

623947212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91729 (or 91715 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 623947212 is about 24978.9353656236. The cubic root of 623947212 is about 854.5076389606.

The spelling of 623947212 in words is "six hundred twenty-three million, nine hundred forty-seven thousand, two hundred twelve".