717139970 has 8 divisors (see below), whose sum is σ = 1290851964. Its totient is φ = 286855984.

The previous prime is 717139961. The next prime is 717139987. The reversal of 717139970 is 79931717.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 696062689 + 21077281 = 26383^2 + 4591^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 35856989 + ... + 35857008.

Almost surely, 2^717139970 is an apocalyptic number.

717139970 is a deficient number, since it is larger than the sum of its proper divisors (573711994).

717139970 is a wasteful number, since it uses less digits than its factorization.

717139970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71714004.

The product of its (nonzero) digits is 83349, while the sum is 44.

The square root of 717139970 is about 26779.4691881673. The cubic root of 717139970 is about 895.0926196503.

The spelling of 717139970 in words is "seven hundred seventeen million, one hundred thirty-nine thousand, nine hundred seventy".