63454631 has 4 divisors (see below), whose sum is σ = 66213552. Its totient is φ = 60695712.

The previous prime is 63454619. The next prime is 63454637. The reversal of 63454631 is 13645436.

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

It is a de Polignac number, because none of the positive numbers 2^k-63454631 is a prime.

It is a super-2 number, since 2×63454631² = 8052980390692322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63454637) 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, 1379426 + ... + 1379471.

It is an arithmetic number, because the mean of its divisors is an integer number (16553388).

Almost surely, 2^63454631 is an apocalyptic number.

63454631 is a deficient number, since it is larger than the sum of its proper divisors (2758921).

63454631 is a wasteful number, since it uses less digits than its factorization.

63454631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2758920.

The product of its digits is 25920, while the sum is 32.

The square root of 63454631 is about 7965.8415123576. The cubic root of 63454631 is about 398.8605719244.

The spelling of 63454631 in words is "sixty-three million, four hundred fifty-four thousand, six hundred thirty-one".