63957961 has 8 divisors (see below), whose sum is σ = 68027904. Its totient is φ = 59922240.

The previous prime is 63957911. The next prime is 63957967. The reversal of 63957961 is 16975936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63957961 - 2⁹ = 63957449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63957967) 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, 4645 + ... + 12226.

It is an arithmetic number, because the mean of its divisors is an integer number (8503488).

Almost surely, 2^63957961 is an apocalyptic number.

It is an amenable number.

63957961 is a deficient number, since it is larger than the sum of its proper divisors (4069943).

63957961 is a wasteful number, since it uses less digits than its factorization.

63957961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17111.

The product of its digits is 306180, while the sum is 46.

The square root of 63957961 is about 7997.3721308940. The cubic root of 63957961 is about 399.9123995668.

The spelling of 63957961 in words is "sixty-three million, nine hundred fifty-seven thousand, nine hundred sixty-one".