64971941 has 8 divisors (see below), whose sum is σ = 68175744. Its totient is φ = 61799760.

The previous prime is 64971937. The next prime is 64971953. The reversal of 64971941 is 14917946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64971941 - 2² = 64971937 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64971961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3641 + ... + 11966.

It is an arithmetic number, because the mean of its divisors is an integer number (8521968).

Almost surely, 2^64971941 is an apocalyptic number.

It is an amenable number.

64971941 is a deficient number, since it is larger than the sum of its proper divisors (3203803).

64971941 is a wasteful number, since it uses less digits than its factorization.

64971941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15811.

The product of its digits is 54432, while the sum is 41.

The square root of 64971941 is about 8060.5174151539. The cubic root of 64971941 is about 402.0147123812.

The spelling of 64971941 in words is "sixty-four million, nine hundred seventy-one thousand, nine hundred forty-one".