707185129249 has 3 divisors (see below), whose sum is σ = 707185970193. Its totient is φ = 707184288306.

The previous prime is 707185129247. The next prime is 707185129309. The reversal of 707185129249 is 942921581707.

The square root of 707185129249 is 840943.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 707185129249 - 2¹ = 707185129247 is a prime.

It is a super-2 number, since 2×707185129249² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 707185129249.

It is not an unprimeable number, because it can be changed into a prime (707185129241) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 420472 + ... + 1261414.

It is an arithmetic number, because the mean of its divisors is an integer number (235728656731).

Almost surely, 2^707185129249 is an apocalyptic number.

707185129249 is the 840943-rd square number.

707185129249 is the 420472-nd centered octagonal number.

It is an amenable number.

707185129249 is a deficient number, since it is larger than the sum of its proper divisors (840944).

707185129249 is an frugal number, since it uses more digits than its factorization.

707185129249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681886 (or 840943 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 55.

The spelling of 707185129249 in words is "seven hundred seven billion, one hundred eighty-five million, one hundred twenty-nine thousand, two hundred forty-nine".