66245364 has 30 divisors (see below), whose sum is σ = 173179314. Its totient is φ = 22081680.

The previous prime is 66245363. The next prime is 66245369. The reversal of 66245364 is 46354266.

It can be written as a sum of positive squares in only one way, i.e., 56881764 + 9363600 = 7542^2 + 3060^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66245363) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 101907 + ... + 102554.

Almost surely, 2^66245364 is an apocalyptic number.

It is an amenable number.

66245364 is an abundant number, since it is smaller than the sum of its proper divisors (106933950).

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

66245364 is a wasteful number, since it uses less digits than its factorization.

66245364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204477 (or 204466 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 66245364 is about 8139.1255058514. The cubic root of 66245364 is about 404.6241781109.

The spelling of 66245364 in words is "sixty-six million, two hundred forty-five thousand, three hundred sixty-four".