667470733 has 4 divisors (see below), whose sum is σ = 668691520. Its totient is φ = 666249948.

The previous prime is 667470731. The next prime is 667470743. The reversal of 667470733 is 337074766.

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 667470733 - 2¹ = 667470731 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 667470733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667470731) 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, 609573 + ... + 610666.

It is an arithmetic number, because the mean of its divisors is an integer number (167172880).

Almost surely, 2^667470733 is an apocalyptic number.

It is an amenable number.

667470733 is a deficient number, since it is larger than the sum of its proper divisors (1220787).

667470733 is a wasteful number, since it uses less digits than its factorization.

667470733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220786.

The product of its (nonzero) digits is 444528, while the sum is 43.

The square root of 667470733 is about 25835.4549601899. The cubic root of 667470733 is about 873.9315319540.

The spelling of 667470733 in words is "six hundred sixty-seven million, four hundred seventy thousand, seven hundred thirty-three".