667067375 has 32 divisors (see below), whose sum is σ = 899458560. Its totient is φ = 491001600.

The previous prime is 667067353. The next prime is 667067377. The reversal of 667067375 is 573760766.

It is not a de Polignac number, because 667067375 - 2⁶ = 667067311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667067377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 777947 + ... + 778803.

It is an arithmetic number, because the mean of its divisors is an integer number (28108080).

Almost surely, 2^667067375 is an apocalyptic number.

667067375 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

667067375 is a deficient number, since it is larger than the sum of its proper divisors (232391185).

667067375 is a wasteful number, since it uses less digits than its factorization.

667067375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364 (or 1354 counting only the distinct ones).

The product of its (nonzero) digits is 1111320, while the sum is 47.

The square root of 667067375 is about 25827.6474925611. The cubic root of 667067375 is about 873.7554551669.

The spelling of 667067375 in words is "six hundred sixty-seven million, sixty-seven thousand, three hundred seventy-five".