66372102 has 16 divisors (see below), whose sum is σ = 147493680. Its totient is φ = 22124016.

The previous prime is 66372101. The next prime is 66372107. The reversal of 66372102 is 20127366.

It is a happy number.

66372102 is a `hidden beast` number, since 6 + 637 + 21 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66372101) 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, 614503 + ... + 614610.

It is an arithmetic number, because the mean of its divisors is an integer number (9218355).

Almost surely, 2^66372102 is an apocalyptic number.

66372102 is an abundant number, since it is smaller than the sum of its proper divisors (81121578).

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

66372102 is a wasteful number, since it uses less digits than its factorization.

66372102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229124 (or 1229118 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 66372102 is about 8146.9075114426. The cubic root of 66372102 is about 404.8820507006.

Adding to 66372102 its reverse (20127366), we get a palindrome (86499468).

The spelling of 66372102 in words is "sixty-six million, three hundred seventy-two thousand, one hundred two".