63690475 has 6 divisors (see below), whose sum is σ = 78976220. Its totient is φ = 50952360.

The previous prime is 63690463. The next prime is 63690481. The reversal of 63690475 is 57409636.

It is not a de Polignac number, because 63690475 - 2¹⁷ = 63559403 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1273785 + ... + 1273834.

Almost surely, 2^63690475 is an apocalyptic number.

63690475 is a deficient number, since it is larger than the sum of its proper divisors (15285745).

63690475 is a wasteful number, since it uses less digits than its factorization.

63690475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547629 (or 2547624 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 63690475 is about 7980.6312406977. The cubic root of 63690475 is about 399.3541138892.

The spelling of 63690475 in words is "sixty-three million, six hundred ninety thousand, four hundred seventy-five".