64442597 has 4 divisors (see below), whose sum is σ = 68233356. Its totient is φ = 60651840.

The previous prime is 64442561. The next prime is 64442633. The reversal of 64442597 is 79524446.

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

It is an interprime number because it is at equal distance from previous prime (64442561) and next prime (64442633).

It can be written as a sum of positive squares in 2 ways, for example, as 49084036 + 15358561 = 7006^2 + 3919^2 .

It is a cyclic number.

It is not a de Polignac number, because 64442597 - 2⁶ = 64442533 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 (64442537) 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, 1895354 + ... + 1895387.

It is an arithmetic number, because the mean of its divisors is an integer number (17058339).

Almost surely, 2^64442597 is an apocalyptic number.

It is an amenable number.

64442597 is a deficient number, since it is larger than the sum of its proper divisors (3790759).

64442597 is a wasteful number, since it uses less digits than its factorization.

64442597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3790758.

The product of its digits is 241920, while the sum is 41.

The square root of 64442597 is about 8027.6146519374. The cubic root of 64442597 is about 400.9199596469.

The spelling of 64442597 in words is "sixty-four million, four hundred forty-two thousand, five hundred ninety-seven".