64873380 has 96 divisors (see below), whose sum is σ = 213429888. Its totient is φ = 14515200.

The previous prime is 64873337. The next prime is 64873387. The reversal of 64873380 is 8337846.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (64873387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4800 + ... + 12360.

It is an arithmetic number, because the mean of its divisors is an integer number (2223228).

Almost surely, 2^64873380 is an apocalyptic number.

64873380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64873380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106714944).

64873380 is an abundant number, since it is smaller than the sum of its proper divisors (148556508).

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

64873380 is a wasteful number, since it uses less digits than its factorization.

64873380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7597 (or 7595 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 64873380 is about 8054.4012812871. The cubic root of 64873380 is about 401.8113270219.

The spelling of 64873380 in words is "sixty-four million, eight hundred seventy-three thousand, three hundred eighty".