712999621 has 2 divisors, whose sum is σ = 712999622. Its totient is φ = 712999620.

The previous prime is 712999607. The next prime is 712999663. The reversal of 712999621 is 126999217.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 461777121 + 251222500 = 21489^2 + 15850^2 .

It is a cyclic number.

It is not a de Polignac number, because 712999621 - 2¹¹ = 712997573 is a prime.

It is a super-2 number, since 2×712999621² = 1016736919092287282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (712991621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356499810 + 356499811.

It is an arithmetic number, because the mean of its divisors is an integer number (356499811).

Almost surely, 2^712999621 is an apocalyptic number.

It is an amenable number.

712999621 is a deficient number, since it is larger than the sum of its proper divisors (1).

712999621 is an equidigital number, since it uses as much as digits as its factorization.

712999621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 46.

The square root of 712999621 is about 26702.0527488057. The cubic root of 712999621 is about 893.3667125563.

The spelling of 712999621 in words is "seven hundred twelve million, nine hundred ninety-nine thousand, six hundred twenty-one".