66245456 has 40 divisors (see below), whose sum is σ = 133235520. Its totient is φ = 31885056.

The previous prime is 66245453. The next prime is 66245461. The reversal of 66245456 is 65454266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66245453) 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, 49565 + ... + 50883.

It is an arithmetic number, because the mean of its divisors is an integer number (3330888).

Almost surely, 2^66245456 is an apocalyptic number.

It is an amenable number.

66245456 is an abundant number, since it is smaller than the sum of its proper divisors (66990064).

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

66245456 is a wasteful number, since it uses less digits than its factorization.

66245456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443 (or 1437 counting only the distinct ones).

The product of its digits is 172800, while the sum is 38.

The square root of 66245456 is about 8139.1311575622. The cubic root of 66245456 is about 404.6243654217.

The spelling of 66245456 in words is "sixty-six million, two hundred forty-five thousand, four hundred fifty-six".