66879462 has 64 divisors (see below), whose sum is σ = 157538304. Its totient is φ = 18731520.

The previous prime is 66879443. The next prime is 66879497. The reversal of 66879462 is 26497866.

It is a congruent number.

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, 40293 + ... + 41919.

It is an arithmetic number, because the mean of its divisors is an integer number (2461536).

Almost surely, 2^66879462 is an apocalyptic number.

66879462 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 66879462, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78769152).

66879462 is an abundant number, since it is smaller than the sum of its proper divisors (90658842).

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

66879462 is a wasteful number, since it uses less digits than its factorization.

66879462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693.

The product of its digits is 870912, while the sum is 48.

The square root of 66879462 is about 8177.9864269880. The cubic root of 66879462 is about 405.9110962285.

The spelling of 66879462 in words is "sixty-six million, eight hundred seventy-nine thousand, four hundred sixty-two".