709212880 has 40 divisors (see below), whose sum is σ = 1650847464. Its totient is φ = 283353600.

The previous prime is 709212877. The next prime is 709212883. The reversal of 709212880 is 88212907.

It is an interprime number because it is at equal distance from previous prime (709212877) and next prime (709212883).

It can be written as a sum of positive squares in 4 ways, for example, as 59166864 + 650046016 = 7692^2 + 25496^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (709212883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70570 + ... + 79990.

Almost surely, 2^709212880 is an apocalyptic number.

It is an amenable number.

709212880 is an abundant number, since it is smaller than the sum of its proper divisors (941634584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

709212880 is a wasteful number, since it uses less digits than its factorization.

709212880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10375 (or 10369 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 709212880 is about 26631.0510494798. The cubic root of 709212880 is about 891.7823475073.

The spelling of 709212880 in words is "seven hundred nine million, two hundred twelve thousand, eight hundred eighty".