707917945 has 12 divisors (see below), whose sum is σ = 988196004. Its totient is φ = 485429280.

The previous prime is 707917937. The next prime is 707917949. The reversal of 707917945 is 549719707.

It can be written as a sum of positive squares in 2 ways, for example, as 184606569 + 523311376 = 13587^2 + 22876^2 .

It is not a de Polignac number, because 707917945 - 2³ = 707917937 is a prime.

It is a super-2 number, since 2×707917945² = 1002295633706046050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (707917949) 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, 1444486 + ... + 1444975.

It is an arithmetic number, because the mean of its divisors is an integer number (82349667).

Almost surely, 2^707917945 is an apocalyptic number.

It is an amenable number.

707917945 is a deficient number, since it is larger than the sum of its proper divisors (280278059).

707917945 is a wasteful number, since it uses less digits than its factorization.

707917945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889480 (or 2889473 counting only the distinct ones).

The product of its (nonzero) digits is 555660, while the sum is 49.

The square root of 707917945 is about 26606.7274387513. The cubic root of 707917945 is about 891.2392554112.

The spelling of 707917945 in words is "seven hundred seven million, nine hundred seventeen thousand, nine hundred forty-five".