667340769 has 16 divisors (see below), whose sum is σ = 914581568. Its totient is φ = 432516672.

The previous prime is 667340767. The next prime is 667340771. The reversal of 667340769 is 967043766.

It is an interprime number because it is at equal distance from previous prime (667340767) and next prime (667340771).

It is not a de Polignac number, because 667340769 - 2¹ = 667340767 is a prime.

It is a super-2 number, since 2×667340769² = 890687403939022722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667340767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 269274 + ... + 271740.

It is an arithmetic number, because the mean of its divisors is an integer number (57161348).

Almost surely, 2^667340769 is an apocalyptic number.

It is an amenable number.

667340769 is a deficient number, since it is larger than the sum of its proper divisors (247240799).

667340769 is a wasteful number, since it uses less digits than its factorization.

667340769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4944.

The product of its (nonzero) digits is 1143072, while the sum is 48.

The square root of 667340769 is about 25832.9396120534. The cubic root of 667340769 is about 873.8748068650.

The spelling of 667340769 in words is "six hundred sixty-seven million, three hundred forty thousand, seven hundred sixty-nine".