716570397 has 12 divisors (see below), whose sum is σ = 1035288124. Its totient is φ = 477601920.

The previous prime is 716570381. The next prime is 716570419. The reversal of 716570397 is 793075617.

716570397 is a `hidden beast` number, since 71 + 6 + 570 + 3 + 9 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 662238756 + 54331641 = 25734^2 + 7371^2 .

It is not a de Polignac number, because 716570397 - 2⁴ = 716570381 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 (716570357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53973 + ... + 65925.

Almost surely, 2^716570397 is an apocalyptic number.

It is an amenable number.

716570397 is a deficient number, since it is larger than the sum of its proper divisors (318717727).

716570397 is a wasteful number, since it uses less digits than its factorization.

716570397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18620 (or 18617 counting only the distinct ones).

The product of its (nonzero) digits is 277830, while the sum is 45.

The square root of 716570397 is about 26768.8325669985. The cubic root of 716570397 is about 894.8555875316.

The spelling of 716570397 in words is "seven hundred sixteen million, five hundred seventy thousand, three hundred ninety-seven".