64700481 has 4 divisors (see below), whose sum is σ = 86267312. Its totient is φ = 43133652.

The previous prime is 64700477. The next prime is 64700497. The reversal of 64700481 is 18400746.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 64700481 - 2² = 64700477 is a prime.

It is a super-2 number, since 2×64700481² = 8372304483262722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64700401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10783411 + ... + 10783416.

It is an arithmetic number, because the mean of its divisors is an integer number (21566828).

Almost surely, 2^64700481 is an apocalyptic number.

It is an amenable number.

64700481 is a deficient number, since it is larger than the sum of its proper divisors (21566831).

64700481 is a wasteful number, since it uses less digits than its factorization.

64700481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21566830.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 64700481 is about 8043.6609202527. The cubic root of 64700481 is about 401.4540434065.

The spelling of 64700481 in words is "sixty-four million, seven hundred thousand, four hundred eighty-one".