64483631 has 4 divisors (see below), whose sum is σ = 64503312. Its totient is φ = 64463952.

The previous prime is 64483619. The next prime is 64483633. The reversal of 64483631 is 13638446.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64483631 is a prime.

It is a super-2 number, since 2×64483631² = 8316277333888322, 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 = 64483591 and 64483600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64483633) 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, 3611 + ... + 11916.

It is an arithmetic number, because the mean of its divisors is an integer number (16125828).

Almost surely, 2^64483631 is an apocalyptic number.

64483631 is a deficient number, since it is larger than the sum of its proper divisors (19681).

64483631 is a wasteful number, since it uses less digits than its factorization.

64483631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19680.

The product of its digits is 41472, while the sum is 35.

The square root of 64483631 is about 8030.1700480127. The cubic root of 64483631 is about 401.0050372188.

The spelling of 64483631 in words is "sixty-four million, four hundred eighty-three thousand, six hundred thirty-one".