64149385 has 8 divisors (see below), whose sum is σ = 79462656. Its totient is φ = 49663920.

The previous prime is 64149373. The next prime is 64149391. The reversal of 64149385 is 58394146.

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

It is not a de Polignac number, because 64149385 - 2⁷ = 64149257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206779 + ... + 207088.

It is an arithmetic number, because the mean of its divisors is an integer number (9932832).

Almost surely, 2^64149385 is an apocalyptic number.

It is an amenable number.

64149385 is a deficient number, since it is larger than the sum of its proper divisors (15313271).

64149385 is a wasteful number, since it uses less digits than its factorization.

64149385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413903.

The product of its digits is 103680, while the sum is 40.

The square root of 64149385 is about 8009.3311206367. The cubic root of 64149385 is about 400.3109769207.

The spelling of 64149385 in words is "sixty-four million, one hundred forty-nine thousand, three hundred eighty-five".