66769902 has 24 divisors (see below), whose sum is σ = 145595736. Its totient is φ = 22113936.

The previous prime is 66769883. The next prime is 66769907. The reversal of 66769902 is 20996766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66769907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8988 + ... + 14639.

It is an arithmetic number, because the mean of its divisors is an integer number (6066489).

Almost surely, 2^66769902 is an apocalyptic number.

66769902 is an abundant number, since it is smaller than the sum of its proper divisors (78825834).

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

66769902 is a wasteful number, since it uses less digits than its factorization.

66769902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23792 (or 23789 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 66769902 is about 8171.2852110301. The cubic root of 66769902 is about 405.6893244791.

The spelling of 66769902 in words is "sixty-six million, seven hundred sixty-nine thousand, nine hundred two".