63690601 has 4 divisors (see below), whose sum is σ = 68589892. Its totient is φ = 58791312.

The previous prime is 63690587. The next prime is 63690629. The reversal of 63690601 is 10609636.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8856576 + 54834025 = 2976^2 + 7405^2 .

It is a cyclic number.

It is not a de Polignac number, because 63690601 - 2¹⁵ = 63657833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63690901) 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 3 ways as a sum of consecutive naturals, for example, 2449626 + ... + 2449651.

It is an arithmetic number, because the mean of its divisors is an integer number (17147473).

Almost surely, 2^63690601 is an apocalyptic number.

It is an amenable number.

63690601 is a deficient number, since it is larger than the sum of its proper divisors (4899291).

63690601 is a wasteful number, since it uses less digits than its factorization.

63690601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4899290.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 63690601 is about 7980.6391348062. The cubic root of 63690601 is about 399.3543772388.

The spelling of 63690601 in words is "sixty-three million, six hundred ninety thousand, six hundred one".