712161864 has 24 divisors (see below), whose sum is σ = 1928771910. Its totient is φ = 237387264.

The previous prime is 712161851. The next prime is 712161869. The reversal of 712161864 is 468161217.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 710648964 + 1512900 = 26658^2 + 1230^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is not an unprimeable number, because it can be changed into a prime (712161869) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4945497 + ... + 4945640.

Almost surely, 2^712161864 is an apocalyptic number.

It is an amenable number.

712161864 is an abundant number, since it is smaller than the sum of its proper divisors (1216610046).

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

712161864 is a wasteful number, since it uses less digits than its factorization.

712161864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9891149 (or 9891142 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 712161864 is about 26686.3610108235. The cubic root of 712161864 is about 893.0166807970.

The spelling of 712161864 in words is "seven hundred twelve million, one hundred sixty-one thousand, eight hundred sixty-four".