63604957 has 4 divisors (see below), whose sum is σ = 68497660. Its totient is φ = 58712256.

The previous prime is 63604943. The next prime is 63604967. The reversal of 63604957 is 75940636.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15912121 + 47692836 = 3989^2 + 6906^2 .

It is a cyclic number.

It is not a de Polignac number, because 63604957 - 2¹¹ = 63602909 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 (63604907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2446332 + ... + 2446357.

It is an arithmetic number, because the mean of its divisors is an integer number (17124415).

Almost surely, 2^63604957 is an apocalyptic number.

It is an amenable number.

63604957 is a deficient number, since it is larger than the sum of its proper divisors (4892703).

63604957 is a wasteful number, since it uses less digits than its factorization.

63604957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4892702.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 63604957 is about 7975.2715941214. The cubic root of 63604957 is about 399.1752945710.

The spelling of 63604957 in words is "sixty-three million, six hundred four thousand, nine hundred fifty-seven".