66742396 has 12 divisors (see below), whose sum is σ = 133484848. Its totient is φ = 28603872.

The previous prime is 66742387. The next prime is 66742409. The reversal of 66742396 is 69324766.

66742396 is an admirable number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1191801 + ... + 1191856.

Almost surely, 2^66742396 is an apocalyptic number.

It is an amenable number.

66742396 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66742396 is a wasteful number, since it uses less digits than its factorization.

66742396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383668 (or 2383666 counting only the distinct ones).

The product of its digits is 326592, while the sum is 43.

The square root of 66742396 is about 8169.6019486876. The cubic root of 66742396 is about 405.6336086406.

The spelling of 66742396 in words is "sixty-six million, seven hundred forty-two thousand, three hundred ninety-six".