667333733 has 4 divisors (see below), whose sum is σ = 728000448. Its totient is φ = 606667020.

The previous prime is 667333729. The next prime is 667333769. The reversal of 667333733 is 337333766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 667333733 - 2² = 667333729 is a prime.

It is a super-2 number, since 2×667333733² = 890668622399430578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667333033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30333341 + ... + 30333362.

It is an arithmetic number, because the mean of its divisors is an integer number (182000112).

Almost surely, 2^667333733 is an apocalyptic number.

It is an amenable number.

667333733 is a deficient number, since it is larger than the sum of its proper divisors (60666715).

667333733 is a wasteful number, since it uses less digits than its factorization.

667333733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60666714.

The product of its digits is 428652, while the sum is 41.

The square root of 667333733 is about 25832.8034289738. The cubic root of 667333733 is about 873.8717356681.

The spelling of 667333733 in words is "six hundred sixty-seven million, three hundred thirty-three thousand, seven hundred thirty-three".