707971213 has 2 divisors, whose sum is σ = 707971214. Its totient is φ = 707971212.

The previous prime is 707971207. The next prime is 707971333. The reversal of 707971213 is 312179707.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 417711844 + 290259369 = 20438^2 + 17037^2 .

It is a cyclic number.

It is not a de Polignac number, because 707971213 - 2⁵ = 707971181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (707971013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353985606 + 353985607.

It is an arithmetic number, because the mean of its divisors is an integer number (353985607).

Almost surely, 2^707971213 is an apocalyptic number.

It is an amenable number.

707971213 is a deficient number, since it is larger than the sum of its proper divisors (1).

707971213 is an equidigital number, since it uses as much as digits as its factorization.

707971213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18522, while the sum is 37.

The square root of 707971213 is about 26607.7284449462. The cubic root of 707971213 is about 891.2616089162.

It can be divided in two parts, 70797 and 1213, that added together give a triangular number (72010 = T₃₇₉).

The spelling of 707971213 in words is "seven hundred seven million, nine hundred seventy-one thousand, two hundred thirteen".