667901222900 has 18 divisors (see below), whose sum is σ = 1449345653910. Its totient is φ = 267160489120.

The previous prime is 667901222887. The next prime is 667901222903. The reversal of 667901222900 is 9222109766.

It can be written as a sum of positive squares in 3 ways, for example, as 114716335204 + 553184887696 = 338698^2 + 743764^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667901222903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3339506015 + ... + 3339506214.

It is an arithmetic number, because the mean of its divisors is an integer number (80519202995).

Almost surely, 2^667901222900 is an apocalyptic number.

It is an amenable number.

667901222900 is an abundant number, since it is smaller than the sum of its proper divisors (781444431010).

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

667901222900 is a wasteful number, since it uses less digits than its factorization.

667901222900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6679012243 (or 6679012236 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 667901222900 in words is "six hundred sixty-seven billion, nine hundred one million, two hundred twenty-two thousand, nine hundred".