712971090 has 96 divisors (see below), whose sum is σ = 2065255920. Its totient is φ = 169440768.

The previous prime is 712971073. The next prime is 712971101. The reversal of 712971090 is 90179217.

It can be written as a sum of positive squares in 8 ways, for example, as 14584761 + 698386329 = 3819^2 + 26427^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23424 + ... + 44436.

Almost surely, 2^712971090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 712971090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1032627960).

712971090 is an abundant number, since it is smaller than the sum of its proper divisors (1352284830).

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

712971090 is a wasteful number, since it uses less digits than its factorization.

712971090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21068 (or 21065 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 36.

The square root of 712971090 is about 26701.5184961455. The cubic root of 712971090 is about 893.3547962406.

The spelling of 712971090 in words is "seven hundred twelve million, nine hundred seventy-one thousand, ninety".