707661 has 12 divisors (see below), whose sum is σ = 1039740. Its totient is φ = 463680.

The previous prime is 707653. The next prime is 707669. The reversal of 707661 is 166707.

707661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (707653) and next prime (707669).

It can be written as a sum of positive squares in 2 ways, for example, as 260100 + 447561 = 510^2 + 669^2 .

It is not a de Polignac number, because 707661 - 2³ = 707653 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 707661.

It is not an unprimeable number, because it can be changed into a prime (707669) 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, 96 + ... + 1193.

It is an arithmetic number, because the mean of its divisors is an integer number (86645).

2⁷⁰⁷⁶⁶¹ is an apocalyptic number.

It is an amenable number.

707661 is a deficient number, since it is larger than the sum of its proper divisors (332079).

707661 is a wasteful number, since it uses less digits than its factorization.

707661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356 (or 1353 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 707661 is about 841.2258911850. The cubic root of 707661 is about 89.1131414673.

The spelling of 707661 in words is "seven hundred seven thousand, six hundred sixty-one".