712530649 has 2 divisors, whose sum is σ = 712530650. Its totient is φ = 712530648.

The previous prime is 712530631. The next prime is 712530661. The reversal of 712530649 is 946035217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 712516249 + 14400 = 26693^2 + 120^2 .

It is a cyclic number.

It is not a de Polignac number, because 712530649 - 2⁵ = 712530617 is a prime.

It is a super-2 number, since 2×712530649² = 1015399851528722402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (712530149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356265324 + 356265325.

It is an arithmetic number, because the mean of its divisors is an integer number (356265325).

Almost surely, 2^712530649 is an apocalyptic number.

It is an amenable number.

712530649 is a deficient number, since it is larger than the sum of its proper divisors (1).

712530649 is an equidigital number, since it uses as much as digits as its factorization.

712530649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 712530649 is about 26693.2697322752. The cubic root of 712530649 is about 893.1708004069.

The spelling of 712530649 in words is "seven hundred twelve million, five hundred thirty thousand, six hundred forty-nine".