667333351 has 8 divisors (see below), whose sum is σ = 718172784. Its totient is φ = 617781120.

The previous prime is 667333313. The next prime is 667333357. The reversal of 667333351 is 153333766.

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 667333351 - 2¹¹ = 667331303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 667333351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667333357) 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, 320725 + ... + 322798.

It is an arithmetic number, because the mean of its divisors is an integer number (89771598).

Almost surely, 2^667333351 is an apocalyptic number.

667333351 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

667333351 is a deficient number, since it is larger than the sum of its proper divisors (50839433).

667333351 is a wasteful number, since it uses less digits than its factorization.

667333351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643601.

The product of its digits is 102060, while the sum is 37.

The square root of 667333351 is about 25832.7960352727. The cubic root of 667333351 is about 873.8715689254.

The spelling of 667333351 in words is "six hundred sixty-seven million, three hundred thirty-three thousand, three hundred fifty-one".