64854660 has 192 divisors, whose sum is σ = 213034752. Its totient is φ = 14598144.

The previous prime is 64854649. The next prime is 64854667. The reversal of 64854660 is 6645846.

It is a super-2 number, since 2×64854660² = 8412253847431200, which contains 22 as substring.

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 (64854667) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 888384 + ... + 888456.

It is an arithmetic number, because the mean of its divisors is an integer number (1109556).

Almost surely, 2^64854660 is an apocalyptic number.

64854660 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 64854660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106517376).

64854660 is an abundant number, since it is smaller than the sum of its proper divisors (148180092).

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

64854660 is a wasteful number, since it uses less digits than its factorization.

64854660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 64854660 is about 8053.2390998902. The cubic root of 64854660 is about 401.7726741277.

The spelling of 64854660 in words is "sixty-four million, eight hundred fifty-four thousand, six hundred sixty".