64417642 has 32 divisors (see below), whose sum is σ = 103783680. Its totient is φ = 29930880.

The previous prime is 64417637. The next prime is 64417643. The reversal of 64417642 is 24671446.

It is a junction number, because it is equal to n+sod(n) for n = 64417598 and 64417607.

It is not an unprimeable number, because it can be changed into a prime (64417643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244803 + ... + 245065.

It is an arithmetic number, because the mean of its divisors is an integer number (3243240).

Almost surely, 2^64417642 is an apocalyptic number.

64417642 is a deficient number, since it is larger than the sum of its proper divisors (39366038).

64417642 is a wasteful number, since it uses less digits than its factorization.

64417642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438.

The product of its digits is 32256, while the sum is 34.

The square root of 64417642 is about 8026.0601791913. The cubic root of 64417642 is about 400.8682017011.

The spelling of 64417642 in words is "sixty-four million, four hundred seventeen thousand, six hundred forty-two".