64373481 has 24 divisors (see below), whose sum is σ = 99716960. Its totient is φ = 41040648.

The previous prime is 64373479. The next prime is 64373497. The reversal of 64373481 is 18437346.

64373481 is a `hidden beast` number, since 643 + 7 + 3 + 4 + 8 + 1 = 666.

It is not a de Polignac number, because 64373481 - 2¹ = 64373479 is a prime.

It is a super-2 number, since 2×64373481² = 8287890112114722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64373401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12030 + ... + 16536.

Almost surely, 2^64373481 is an apocalyptic number.

It is an amenable number.

64373481 is a deficient number, since it is larger than the sum of its proper divisors (35343479).

64373481 is a wasteful number, since it uses less digits than its factorization.

64373481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4562 (or 4533 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 64373481 is about 8023.3086068031. The cubic root of 64373481 is about 400.7765767623.

The spelling of 64373481 in words is "sixty-four million, three hundred seventy-three thousand, four hundred eighty-one".