63730397 has 4 divisors (see below), whose sum is σ = 64064256. Its totient is φ = 63396540.

The previous prime is 63730379. The next prime is 63730411. The reversal of 63730397 is 79303736.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63730397 - 2²² = 59536093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63730397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63730357) 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, 166643 + ... + 167024.

It is an arithmetic number, because the mean of its divisors is an integer number (16016064).

Almost surely, 2^63730397 is an apocalyptic number.

It is an amenable number.

63730397 is a deficient number, since it is larger than the sum of its proper divisors (333859).

63730397 is a wasteful number, since it uses less digits than its factorization.

63730397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333858.

The product of its (nonzero) digits is 71442, while the sum is 38.

The square root of 63730397 is about 7983.1320294731. The cubic root of 63730397 is about 399.4375365412.

The spelling of 63730397 in words is "sixty-three million, seven hundred thirty thousand, three hundred ninety-seven".