63690407 has 6 divisors (see below), whose sum is σ = 70006944. Its totient is φ = 57900260.

The previous prime is 63690397. The next prime is 63690421. The reversal of 63690407 is 70409636.

It is not a de Polignac number, because 63690407 - 2⁴ = 63690391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63690437) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 263063 + ... + 263304.

It is an arithmetic number, because the mean of its divisors is an integer number (11667824).

Almost surely, 2^63690407 is an apocalyptic number.

63690407 is a deficient number, since it is larger than the sum of its proper divisors (6316537).

63690407 is a wasteful number, since it uses less digits than its factorization.

63690407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526389 (or 526378 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 63690407 is about 7980.6269803819. The cubic root of 63690407 is about 399.3539717638.

The spelling of 63690407 in words is "sixty-three million, six hundred ninety thousand, four hundred seven".