63974669 has 16 divisors (see below), whose sum is σ = 73734144. Its totient is φ = 54961200.

The previous prime is 63974663. The next prime is 63974671. The reversal of 63974669 is 96647936.

It is a cyclic number.

It is not a de Polignac number, because 63974669 - 2⁸ = 63974413 is a prime.

It is a super-2 number, since 2×63974669² = 8185516547319122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63974663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12482 + ... + 16844.

It is an arithmetic number, because the mean of its divisors is an integer number (4608384).

Almost surely, 2^63974669 is an apocalyptic number.

It is an amenable number.

63974669 is a deficient number, since it is larger than the sum of its proper divisors (9759475).

63974669 is a wasteful number, since it uses less digits than its factorization.

63974669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4448.

The product of its digits is 1469664, while the sum is 50.

The square root of 63974669 is about 7998.4166558138. The cubic root of 63974669 is about 399.9472201194.

The spelling of 63974669 in words is "sixty-three million, nine hundred seventy-four thousand, six hundred sixty-nine".