707720 has 32 divisors (see below), whose sum is σ = 1716120. Its totient is φ = 261120.

The previous prime is 707717. The next prime is 707723. The reversal of 707720 is 27707.

It is an interprime number because it is at equal distance from previous prime (707717) and next prime (707723).

It can be written as a sum of positive squares in 4 ways, for example, as 315844 + 391876 = 562^2 + 626^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (707723) 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, 161 + ... + 1200.

2⁷⁰⁷⁷²⁰ is an apocalyptic number.

It is an amenable number.

707720 is an abundant number, since it is smaller than the sum of its proper divisors (1008400).

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

707720 is a wasteful number, since it uses less digits than its factorization.

707720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385 (or 1381 counting only the distinct ones).

The product of its (nonzero) digits is 686, while the sum is 23.

The square root of 707720 is about 841.2609583239. The cubic root of 707720 is about 89.1156179493.

The spelling of 707720 in words is "seven hundred seven thousand, seven hundred twenty", and thus it is an iban number.