66424254 has 32 divisors (see below), whose sum is σ = 146119680. Its totient is φ = 20002272.

The previous prime is 66424229. The next prime is 66424279. The reversal of 66424254 is 45242466.

It is an interprime number because it is at equal distance from previous prime (66424229) and next prime (66424279).

It is a Curzon number.

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, 5394 + ... + 12725.

It is an arithmetic number, because the mean of its divisors is an integer number (4566240).

Almost surely, 2^66424254 is an apocalyptic number.

66424254 is an abundant number, since it is smaller than the sum of its proper divisors (79695426).

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

66424254 is a wasteful number, since it uses less digits than its factorization.

66424254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18184.

The product of its digits is 46080, while the sum is 33.

The square root of 66424254 is about 8150.1076066516. The cubic root of 66424254 is about 404.9880685404.

The spelling of 66424254 in words is "sixty-six million, four hundred twenty-four thousand, two hundred fifty-four".