64380474 has 64 divisors (see below), whose sum is σ = 152064000. Its totient is φ = 20133360.

The previous prime is 64380431. The next prime is 64380487. The reversal of 64380474 is 47408346.

64380474 is a `hidden beast` number, since 643 + 8 + 0 + 4 + 7 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134167 + ... + 134645.

It is an arithmetic number, because the mean of its divisors is an integer number (2376000).

Almost surely, 2^64380474 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64380474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76032000).

64380474 is an abundant number, since it is smaller than the sum of its proper divisors (87683526).

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

64380474 is a wasteful number, since it uses less digits than its factorization.

64380474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 64380474 is about 8023.7443877531. The cubic root of 64380474 is about 400.7910885824.

The spelling of 64380474 in words is "sixty-four million, three hundred eighty thousand, four hundred seventy-four".