66787230 has 16 divisors (see below), whose sum is σ = 160289424. Its totient is φ = 17809920.

The previous prime is 66787211. The next prime is 66787249. The reversal of 66787230 is 3278766.

It is an interprime number because it is at equal distance from previous prime (66787211) and next prime (66787249).

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 7 ways as a sum of consecutive naturals, for example, 1113091 + ... + 1113150.

It is an arithmetic number, because the mean of its divisors is an integer number (10018089).

Almost surely, 2^66787230 is an apocalyptic number.

66787230 is an abundant number, since it is smaller than the sum of its proper divisors (93502194).

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

66787230 is a wasteful number, since it uses less digits than its factorization.

66787230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226251.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 66787230 is about 8172.3454405697. The cubic root of 66787230 is about 405.7244160217.

The spelling of 66787230 in words is "sixty-six million, seven hundred eighty-seven thousand, two hundred thirty".