667161276 has 24 divisors (see below), whose sum is σ = 1624393344. Its totient is φ = 212718000.

The previous prime is 667161251. The next prime is 667161301. The reversal of 667161276 is 672161766.

It is an interprime number because it is at equal distance from previous prime (667161251) and next prime (667161301).

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, 1208350 + ... + 1208901.

It is an arithmetic number, because the mean of its divisors is an integer number (67683056).

Almost surely, 2^667161276 is an apocalyptic number.

It is an amenable number.

667161276 is an abundant number, since it is smaller than the sum of its proper divisors (957232068).

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

667161276 is a wasteful number, since it uses less digits than its factorization.

667161276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417281 (or 2417279 counting only the distinct ones).

The product of its digits is 127008, while the sum is 42.

The square root of 667161276 is about 25829.4652674034. The cubic root of 667161276 is about 873.7964518561.

The spelling of 667161276 in words is "six hundred sixty-seven million, one hundred sixty-one thousand, two hundred seventy-six".