64015645 has 8 divisors (see below), whose sum is σ = 78453504. Its totient is φ = 50122704.

The previous prime is 64015643. The next prime is 64015667. The reversal of 64015645 is 54651046.

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 64015645 - 2¹ = 64015643 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 (64015643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135969 + ... + 136438.

It is an arithmetic number, because the mean of its divisors is an integer number (9806688).

Almost surely, 2^64015645 is an apocalyptic number.

It is an amenable number.

64015645 is a deficient number, since it is larger than the sum of its proper divisors (14437859).

64015645 is a wasteful number, since it uses less digits than its factorization.

64015645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272459.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 64015645 is about 8000.9777527500. The cubic root of 64015645 is about 400.0325910945.

The spelling of 64015645 in words is "sixty-four million, fifteen thousand, six hundred forty-five".