712099920 has 80 divisors (see below), whose sum is σ = 2522874240. Its totient is φ = 162765312.

The previous prime is 712099847. The next prime is 712099933. The reversal of 712099920 is 29990217.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210255 + ... + 213614.

It is an arithmetic number, because the mean of its divisors is an integer number (31535928).

Almost surely, 2^712099920 is an apocalyptic number.

712099920 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

712099920 is an abundant number, since it is smaller than the sum of its proper divisors (1810774320).

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

712099920 is a wasteful number, since it uses less digits than its factorization.

712099920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423892 (or 423886 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 712099920 is about 26685.2003927271. The cubic root of 712099920 is about 892.9907884486.

The spelling of 712099920 in words is "seven hundred twelve million, ninety-nine thousand, nine hundred twenty".