66244892 has 48 divisors (see below), whose sum is σ = 137883648. Its totient is φ = 27250560.

The previous prime is 66244883. The next prime is 66244901. The reversal of 66244892 is 29844266.

It is an interprime number because it is at equal distance from previous prime (66244883) and next prime (66244901).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144728 + ... + 145184.

It is an arithmetic number, because the mean of its divisors is an integer number (2872576).

Almost surely, 2^66244892 is an apocalyptic number.

66244892 is a gapful number since it is divisible by the number (62) 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 66244892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68941824).

66244892 is an abundant number, since it is smaller than the sum of its proper divisors (71638756).

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

66244892 is a wasteful number, since it uses less digits than its factorization.

66244892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666 (or 664 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 66244892 is about 8139.0965100556. The cubic root of 66244892 is about 404.6232171226.

It can be divided in two parts, 662 and 44892, that added together give a palindrome (45554).

The spelling of 66244892 in words is "sixty-six million, two hundred forty-four thousand, eight hundred ninety-two".