64372501 has 4 divisors (see below), whose sum is σ = 65942604. Its totient is φ = 62802400.

The previous prime is 64372493. The next prime is 64372537. The reversal of 64372501 is 10527346.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24354225 + 40018276 = 4935^2 + 6326^2 .

It is a cyclic number.

It is not a de Polignac number, because 64372501 - 2³ = 64372493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64372501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64372571) 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, 784990 + ... + 785071.

It is an arithmetic number, because the mean of its divisors is an integer number (16485651).

Almost surely, 2^64372501 is an apocalyptic number.

It is an amenable number.

64372501 is a deficient number, since it is larger than the sum of its proper divisors (1570103).

64372501 is a wasteful number, since it uses less digits than its factorization.

64372501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570102.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 64372501 is about 8023.2475345087. The cubic root of 64372501 is about 400.7745429898.

Adding to 64372501 its reverse (10527346), we get a palindrome (74899847).

The spelling of 64372501 in words is "sixty-four million, three hundred seventy-two thousand, five hundred one".