64425715 has 8 divisors (see below), whose sum is σ = 77649840. Its totient is φ = 51314592.

The previous prime is 64425701. The next prime is 64425721. The reversal of 64425715 is 51752446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64425715 - 2¹³ = 64417523 is a prime.

It is a super-2 number, since 2×64425715² = 8301345506522450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26989 + ... + 29278.

It is an arithmetic number, because the mean of its divisors is an integer number (9706230).

Almost surely, 2^64425715 is an apocalyptic number.

64425715 is a deficient number, since it is larger than the sum of its proper divisors (13224125).

64425715 is a wasteful number, since it uses less digits than its factorization.

64425715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56501.

The product of its digits is 33600, while the sum is 34.

The square root of 64425715 is about 8026.5630876484. The cubic root of 64425715 is about 400.8849469783.

The spelling of 64425715 in words is "sixty-four million, four hundred twenty-five thousand, seven hundred fifteen".