66376394 has 16 divisors (see below), whose sum is σ = 117459456. Its totient is φ = 27529200.

The previous prime is 66376379. The next prime is 66376399. The reversal of 66376394 is 49367366.

It is not an unprimeable number, because it can be changed into a prime (66376399) 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, 76037 + ... + 76904.

It is an arithmetic number, because the mean of its divisors is an integer number (7341216).

Almost surely, 2^66376394 is an apocalyptic number.

66376394 is a deficient number, since it is larger than the sum of its proper divisors (51083062).

66376394 is a wasteful number, since it uses less digits than its factorization.

66376394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152981.

The product of its digits is 489888, while the sum is 44.

The square root of 66376394 is about 8147.1709200188. The cubic root of 66376394 is about 404.8907778428.

Subtracting from 66376394 its reverse (49367366), we obtain a triangular number (17009028 = T₅₈₃₂).

It can be divided in two parts, 6637 and 6394, that added together give a palindrome (13031).

The spelling of 66376394 in words is "sixty-six million, three hundred seventy-six thousand, three hundred ninety-four".