664201514 has 4 divisors (see below), whose sum is σ = 996302274. Its totient is φ = 332100756.

The previous prime is 664201513. The next prime is 664201547. The reversal of 664201514 is 415102466.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 653671489 + 10530025 = 25567^2 + 3245^2 .

It is not an unprimeable number, because it can be changed into a prime (664201511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166050377 + ... + 166050380.

Almost surely, 2^664201514 is an apocalyptic number.

664201514 is a deficient number, since it is larger than the sum of its proper divisors (332100760).

664201514 is a wasteful number, since it uses less digits than its factorization.

664201514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332100759.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 664201514 is about 25772.1072867548. The cubic root of 664201514 is about 872.5023802148.

The spelling of 664201514 in words is "six hundred sixty-four million, two hundred one thousand, five hundred fourteen".