963681957 has 24 divisors (see below), whose sum is σ = 1674570560. Its totient is φ = 521691840.

The previous prime is 963681923. The next prime is 963681959. The reversal of 963681957 is 759186369.

963681957 is a `hidden beast` number, since 96 + 368 + 195 + 7 = 666.

It is not a de Polignac number, because 963681957 - 2⁶ = 963681893 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 (963681959) 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, 401344 + ... + 403737.

Almost surely, 2^963681957 is an apocalyptic number.

It is an amenable number.

963681957 is a deficient number, since it is larger than the sum of its proper divisors (710888603).

963681957 is a wasteful number, since it uses less digits than its factorization.

963681957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805113 (or 805110 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 963681957 is about 31043.2272323610. The cubic root of 963681957 is about 987.7443995195.

The spelling of 963681957 in words is "nine hundred sixty-three million, six hundred eighty-one thousand, nine hundred fifty-seven".