64342649 has 8 divisors (see below), whose sum is σ = 73704000. Its totient is φ = 55023696.

The previous prime is 64342613. The next prime is 64342651. The reversal of 64342649 is 94624346.

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

It is not a de Polignac number, because 64342649 - 2⁸ = 64342393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64342609) 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, 7274 + ... + 13475.

It is an arithmetic number, because the mean of its divisors is an integer number (9213000).

Almost surely, 2^64342649 is an apocalyptic number.

It is an amenable number.

64342649 is a deficient number, since it is larger than the sum of its proper divisors (9361351).

64342649 is a wasteful number, since it uses less digits than its factorization.

64342649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21199.

The product of its digits is 124416, while the sum is 38.

The square root of 64342649 is about 8021.3869748317. The cubic root of 64342649 is about 400.7125818971.

The spelling of 64342649 in words is "sixty-four million, three hundred forty-two thousand, six hundred forty-nine".