64378630 has 16 divisors (see below), whose sum is σ = 119620224. Its totient is φ = 24920640.

The previous prime is 64378621. The next prime is 64378649. The reversal of 64378630 is 3687346.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 64378630.

It is a congruent 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, 103527 + ... + 104146.

It is an arithmetic number, because the mean of its divisors is an integer number (7476264).

Almost surely, 2^64378630 is an apocalyptic number.

64378630 is a deficient number, since it is larger than the sum of its proper divisors (55241594).

64378630 is a wasteful number, since it uses less digits than its factorization.

64378630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207711.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 64378630 is about 8023.6294779856. The cubic root of 64378630 is about 400.7872620297.

The spelling of 64378630 in words is "sixty-four million, three hundred seventy-eight thousand, six hundred thirty".