701861661 has 12 divisors (see below), whose sum is σ = 1014104988. Its totient is φ = 467767104.

The previous prime is 701861659. The next prime is 701861681. The reversal of 701861661 is 166168107.

It can be written as a sum of positive squares in 2 ways, for example, as 309584025 + 392277636 = 17595^2 + 19806^2 .

It is not a de Polignac number, because 701861661 - 2¹ = 701861659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (701861681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26401 + ... + 45833.

It is an arithmetic number, because the mean of its divisors is an integer number (84508749).

Almost surely, 2^701861661 is an apocalyptic number.

It is an amenable number.

701861661 is a deficient number, since it is larger than the sum of its proper divisors (312243327).

701861661 is a wasteful number, since it uses less digits than its factorization.

701861661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23452 (or 23449 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 701861661 is about 26492.6718358115. The cubic root of 701861661 is about 888.6904365240.

The spelling of 701861661 in words is "seven hundred one million, eight hundred sixty-one thousand, six hundred sixty-one".