63261668 has 24 divisors (see below), whose sum is σ = 113246112. Its totient is φ = 30913344.

The previous prime is 63261637. The next prime is 63261689. The reversal of 63261668 is 86616236.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35855 + ... + 37577.

It is an arithmetic number, because the mean of its divisors is an integer number (4718588).

Almost surely, 2^63261668 is an apocalyptic number.

It is an amenable number.

63261668 is a deficient number, since it is larger than the sum of its proper divisors (49984444).

63261668 is a wasteful number, since it uses less digits than its factorization.

63261668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931 (or 1929 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 63261668 is about 7953.7203873408. The cubic root of 63261668 is about 398.4558550447.

The spelling of 63261668 in words is "sixty-three million, two hundred sixty-one thousand, six hundred sixty-eight".