63674915 has 4 divisors (see below), whose sum is σ = 76409904. Its totient is φ = 50939928.

The previous prime is 63674903. The next prime is 63674917. The reversal of 63674915 is 51947636.

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

It is a cyclic number.

It is not a de Polignac number, because 63674915 - 2⁸ = 63674659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63674917) 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, 6367487 + ... + 6367496.

It is an arithmetic number, because the mean of its divisors is an integer number (19102476).

Almost surely, 2^63674915 is an apocalyptic number.

63674915 is a deficient number, since it is larger than the sum of its proper divisors (12734989).

63674915 is a wasteful number, since it uses less digits than its factorization.

63674915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12734988.

The product of its digits is 136080, while the sum is 41.

The square root of 63674915 is about 7979.6563209201. The cubic root of 63674915 is about 399.3215896322.

The spelling of 63674915 in words is "sixty-three million, six hundred seventy-four thousand, nine hundred fifteen".