707157661 has 24 divisors (see below), whose sum is σ = 850332384. Its totient is φ = 586000800.

The previous prime is 707157631. The next prime is 707157683. The reversal of 707157661 is 166751707.

It is not a de Polignac number, because 707157661 - 2⁷ = 707157533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (707157601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 211146 + ... + 214468.

It is an arithmetic number, because the mean of its divisors is an integer number (35430516).

Almost surely, 2^707157661 is an apocalyptic number.

It is an amenable number.

707157661 is a deficient number, since it is larger than the sum of its proper divisors (143174723).

707157661 is a wasteful number, since it uses less digits than its factorization.

707157661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3481 (or 3474 counting only the distinct ones).

The product of its (nonzero) digits is 61740, while the sum is 40.

The square root of 707157661 is about 26592.4361614351. The cubic root of 707157661 is about 890.9200858105.

The spelling of 707157661 in words is "seven hundred seven million, one hundred fifty-seven thousand, six hundred sixty-one".