64748431 has 12 divisors (see below), whose sum is σ = 71554000. Its totient is φ = 58544640.

The previous prime is 64748423. The next prime is 64748443. The reversal of 64748431 is 13484746.

It is not a de Polignac number, because 64748431 - 2³ = 64748423 is a prime.

It is a super-2 number, since 2×64748431² = 8384718633923522, 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 (64748401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22735 + ... + 25423.

Almost surely, 2^64748431 is an apocalyptic number.

64748431 is a deficient number, since it is larger than the sum of its proper divisors (6805569).

64748431 is a wasteful number, since it uses less digits than its factorization.

64748431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2910 (or 2899 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 64748431 is about 8046.6409762086. The cubic root of 64748431 is about 401.5531924271.

The spelling of 64748431 in words is "sixty-four million, seven hundred forty-eight thousand, four hundred thirty-one".