66877902 has 48 divisors (see below), whose sum is σ = 178345440. Its totient is φ = 17637696.

The previous prime is 66877901. The next prime is 66877913. The reversal of 66877902 is 20977866.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66877901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18777 + ... + 22052.

It is an arithmetic number, because the mean of its divisors is an integer number (3715530).

Almost surely, 2^66877902 is an apocalyptic number.

66877902 is an abundant number, since it is smaller than the sum of its proper divisors (111467538).

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

66877902 is a wasteful number, since it uses less digits than its factorization.

66877902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40857 (or 40854 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 66877902 is about 8177.8910484305. The cubic root of 66877902 is about 405.9079401713.

The spelling of 66877902 in words is "sixty-six million, eight hundred seventy-seven thousand, nine hundred two".