63697730 has 8 divisors (see below), whose sum is σ = 114655932. Its totient is φ = 25479088.

The previous prime is 63697727. The next prime is 63697763. The reversal of 63697730 is 3779636.

It can be written as a sum of positive squares in 2 ways, for example, as 63696361 + 1369 = 7981^2 + 37^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3184877 + ... + 3184896.

Almost surely, 2^63697730 is an apocalyptic number.

63697730 is a deficient number, since it is larger than the sum of its proper divisors (50958202).

63697730 is a wasteful number, since it uses less digits than its factorization.

63697730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6369780.

The product of its (nonzero) digits is 142884, while the sum is 41.

The square root of 63697730 is about 7981.0857657339. The cubic root of 63697730 is about 399.3692768268.

The spelling of 63697730 in words is "sixty-three million, six hundred ninety-seven thousand, seven hundred thirty".