64115357 has 4 divisors (see below), whose sum is σ = 64486140. Its totient is φ = 63744576.

The previous prime is 64115341. The next prime is 64115371. The reversal of 64115357 is 75351146.

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 57668836 + 6446521 = 7594^2 + 2539^2 .

It is a cyclic number.

It is not a de Polignac number, because 64115357 - 2⁴ = 64115341 is a prime.

It is a super-2 number, since 2×64115357² = 8221558006474898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64115327) 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, 185132 + ... + 185477.

It is an arithmetic number, because the mean of its divisors is an integer number (16121535).

Almost surely, 2^64115357 is an apocalyptic number.

It is an amenable number.

64115357 is a deficient number, since it is larger than the sum of its proper divisors (370783).

64115357 is a wasteful number, since it uses less digits than its factorization.

64115357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370782.

The product of its digits is 12600, while the sum is 32.

The square root of 64115357 is about 8007.2065665874. The cubic root of 64115357 is about 400.2401828350.

The spelling of 64115357 in words is "sixty-four million, one hundred fifteen thousand, three hundred fifty-seven".