64642350 has 24 divisors (see below), whose sum is σ = 160313400. Its totient is φ = 17237920.

The previous prime is 64642321. The next prime is 64642379. The reversal of 64642350 is 5324646.

It is an interprime number because it is at equal distance from previous prime (64642321) and next prime (64642379).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215325 + ... + 215624.

It is an arithmetic number, because the mean of its divisors is an integer number (6679725).

Almost surely, 2^64642350 is an apocalyptic number.

64642350 is an abundant number, since it is smaller than the sum of its proper divisors (95671050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64642350 is a wasteful number, since it uses less digits than its factorization.

64642350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430964 (or 430959 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 64642350 is about 8040.0466416558. The cubic root of 64642350 is about 401.3337768219. Note that the first 3 decimals are identical.

Adding to 64642350 its reverse (5324646), we get a palindrome (69966996).

The spelling of 64642350 in words is "sixty-four million, six hundred forty-two thousand, three hundred fifty".