66983454 has 12 divisors (see below), whose sum is σ = 145130856. Its totient is φ = 22327812.

The previous prime is 66983453. The next prime is 66983461. The reversal of 66983454 is 45438966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66983453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1860634 + ... + 1860669.

It is an arithmetic number, because the mean of its divisors is an integer number (12094238).

Almost surely, 2^66983454 is an apocalyptic number.

66983454 is an abundant number, since it is smaller than the sum of its proper divisors (78147402).

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

66983454 is a wasteful number, since it uses less digits than its factorization.

66983454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3721311 (or 3721308 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 66983454 is about 8184.3420016517. The cubic root of 66983454 is about 406.1213732746.

The spelling of 66983454 in words is "sixty-six million, nine hundred eighty-three thousand, four hundred fifty-four".