715629997 has 4 divisors (see below), whose sum is σ = 715770396. Its totient is φ = 715489600.

The previous prime is 715629989. The next prime is 715630001. The reversal of 715629997 is 799926517.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 241305156 + 474324841 = 15534^2 + 21779^2 .

It is a cyclic number.

It is not a de Polignac number, because 715629997 - 2³ = 715629989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (715629697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62254 + ... + 72847.

It is an arithmetic number, because the mean of its divisors is an integer number (178942599).

Almost surely, 2^715629997 is an apocalyptic number.

It is an amenable number.

715629997 is a deficient number, since it is larger than the sum of its proper divisors (140399).

715629997 is a wasteful number, since it uses less digits than its factorization.

715629997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140398.

The product of its digits is 2143260, while the sum is 55.

The square root of 715629997 is about 26751.2615964182. The cubic root of 715629997 is about 894.4639579052.

The spelling of 715629997 in words is "seven hundred fifteen million, six hundred twenty-nine thousand, nine hundred ninety-seven".