64631941 has 4 divisors (see below), whose sum is σ = 70507584. Its totient is φ = 58756300.

The previous prime is 64631929. The next prime is 64631953. The reversal of 64631941 is 14913646.

64631941 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an interprime number because it is at equal distance from previous prime (64631929) and next prime (64631953).

It is a cyclic number.

It is not a de Polignac number, because 64631941 - 2⁷ = 64631813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64631897 and 64631906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64631911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2937805 + ... + 2937826.

It is an arithmetic number, because the mean of its divisors is an integer number (17626896).

Almost surely, 2^64631941 is an apocalyptic number.

It is an amenable number.

64631941 is a deficient number, since it is larger than the sum of its proper divisors (5875643).

64631941 is a wasteful number, since it uses less digits than its factorization.

64631941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5875642.

The product of its digits is 15552, while the sum is 34.

The square root of 64631941 is about 8039.3992934796. The cubic root of 64631941 is about 401.3122341463.

The spelling of 64631941 in words is "sixty-four million, six hundred thirty-one thousand, nine hundred forty-one".