63951897 has 8 divisors (see below), whose sum is σ = 85539456. Its totient is φ = 42499472.

The previous prime is 63951883. The next prime is 63951907. The reversal of 63951897 is 79815936.

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 63951897 - 2¹⁸ = 63689753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63951817) 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, 32673 + ... + 34574.

It is an arithmetic number, because the mean of its divisors is an integer number (10692432).

Almost surely, 2^63951897 is an apocalyptic number.

It is an amenable number.

63951897 is a deficient number, since it is larger than the sum of its proper divisors (21587559).

63951897 is a wasteful number, since it uses less digits than its factorization.

63951897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67567.

The product of its digits is 408240, while the sum is 48.

The square root of 63951897 is about 7996.9929973709. The cubic root of 63951897 is about 399.8997602988.

The spelling of 63951897 in words is "sixty-three million, nine hundred fifty-one thousand, eight hundred ninety-seven".