63399670 has 16 divisors (see below), whose sum is σ = 115020288. Its totient is φ = 25159680.

The previous prime is 63399659. The next prime is 63399691. The reversal of 63399670 is 7699336.

It is a happy number.

It is a super-2 number, since 2×63399670² = 8039036312217800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23691 + ... + 26230.

It is an arithmetic number, because the mean of its divisors is an integer number (7188768).

Almost surely, 2^63399670 is an apocalyptic number.

63399670 is a deficient number, since it is larger than the sum of its proper divisors (51620618).

63399670 is a wasteful number, since it uses less digits than its factorization.

63399670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50055.

The product of its (nonzero) digits is 183708, while the sum is 43.

The square root of 63399670 is about 7962.3909725660. The cubic root of 63399670 is about 398.7453814450.

The spelling of 63399670 in words is "sixty-three million, three hundred ninety-nine thousand, six hundred seventy".