64674280 has 32 divisors (see below), whose sum is σ = 158747040. Its totient is φ = 23517760.

The previous prime is 64674241. The next prime is 64674289. The reversal of 64674280 is 8247646.

It is not an unprimeable number, because it can be changed into a prime (64674289) 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, 73054 + ... + 73933.

It is an arithmetic number, because the mean of its divisors is an integer number (4960845).

Almost surely, 2^64674280 is an apocalyptic number.

It is an amenable number.

64674280 is an abundant number, since it is smaller than the sum of its proper divisors (94072760).

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

64674280 is a wasteful number, since it uses less digits than its factorization.

64674280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147009 (or 147005 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 64674280 is about 8042.0320815078. The cubic root of 64674280 is about 401.3998453676.

The spelling of 64674280 in words is "sixty-four million, six hundred seventy-four thousand, two hundred eighty".