64312501 has 4 divisors (see below), whose sum is σ = 70159104. Its totient is φ = 58465900.

The previous prime is 64312487. The next prime is 64312519. The reversal of 64312501 is 10521346.

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 a cyclic number.

It is not a de Polignac number, because 64312501 - 2¹⁹ = 63788213 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 (64312571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2923285 + ... + 2923306.

It is an arithmetic number, because the mean of its divisors is an integer number (17539776).

Almost surely, 2^64312501 is an apocalyptic number.

It is an amenable number.

64312501 is a deficient number, since it is larger than the sum of its proper divisors (5846603).

64312501 is a wasteful number, since it uses less digits than its factorization.

64312501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5846602.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 64312501 is about 8019.5075285207. The cubic root of 64312501 is about 400.6499869702.

Adding to 64312501 its reverse (10521346), we get a palindrome (74833847).

The spelling of 64312501 in words is "sixty-four million, three hundred twelve thousand, five hundred one".