63608431 has 4 divisors (see below), whose sum is σ = 64686600. Its totient is φ = 62530264.

The previous prime is 63608417. The next prime is 63608521. The reversal of 63608431 is 13480636.

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

It is a cyclic number.

It is not a de Polignac number, because 63608431 - 2⁵ = 63608399 is a prime.

It is a super-2 number, since 2×63608431² = 8092064988563522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63608393 and 63608402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63608401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538996 + ... + 539113.

It is an arithmetic number, because the mean of its divisors is an integer number (16171650).

Almost surely, 2^63608431 is an apocalyptic number.

63608431 is a deficient number, since it is larger than the sum of its proper divisors (1078169).

63608431 is a wasteful number, since it uses less digits than its factorization.

63608431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078168.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 63608431 is about 7975.4893893729. The cubic root of 63608431 is about 399.1825618752.

The spelling of 63608431 in words is "sixty-three million, six hundred eight thousand, four hundred thirty-one".