667254371 has 8 divisors (see below), whose sum is σ = 763231584. Its totient is φ = 571440960.

The previous prime is 667254319. The next prime is 667254389. The reversal of 667254371 is 173452766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 667254371 - 2⁶ = 667254307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667254391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32090 + ... + 48623.

It is an arithmetic number, because the mean of its divisors is an integer number (95403948).

Almost surely, 2^667254371 is an apocalyptic number.

667254371 is a deficient number, since it is larger than the sum of its proper divisors (95977213).

667254371 is a wasteful number, since it uses less digits than its factorization.

667254371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81901.

The product of its digits is 211680, while the sum is 41.

The square root of 667254371 is about 25831.2673130840. The cubic root of 667254371 is about 873.8370928527.

The spelling of 667254371 in words is "six hundred sixty-seven million, two hundred fifty-four thousand, three hundred seventy-one".