667902027 has 12 divisors (see below), whose sum is σ = 964308984. Its totient is φ = 411016320.

The previous prime is 667902023. The next prime is 667902031. The reversal of 667902027 is 720209766.

It is an interprime number because it is at equal distance from previous prime (667902023) and next prime (667902031).

It is not a de Polignac number, because 667902027 - 2² = 667902023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (667902023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 658174 + ... + 659187.

It is an arithmetic number, because the mean of its divisors is an integer number (80359082).

Almost surely, 2^667902027 is an apocalyptic number.

667902027 is a deficient number, since it is larger than the sum of its proper divisors (296406957).

667902027 is a wasteful number, since it uses less digits than its factorization.

667902027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317390 (or 1317377 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 667902027 is about 25843.8005525503. The cubic root of 667902027 is about 874.1197251100.

The spelling of 667902027 in words is "six hundred sixty-seven million, nine hundred two thousand, twenty-seven".