64201971 has 8 divisors (see below), whose sum is σ = 87053760. Its totient is φ = 42075752.

The previous prime is 64201933. The next prime is 64201987. The reversal of 64201971 is 17910246.

It is a happy number.

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 64201971 - 2¹⁴ = 64185587 is a prime.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (64208971) 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, 181185 + ... + 181538.

It is an arithmetic number, because the mean of its divisors is an integer number (10881720).

Almost surely, 2^64201971 is an apocalyptic number.

64201971 is a deficient number, since it is larger than the sum of its proper divisors (22851789).

64201971 is a wasteful number, since it uses less digits than its factorization.

64201971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362785.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 64201971 is about 8012.6132441295. The cubic root of 64201971 is about 400.4203310664.

The spelling of 64201971 in words is "sixty-four million, two hundred one thousand, nine hundred seventy-one".