667274769 has 48 divisors (see below), whose sum is σ = 1169296128. Its totient is φ = 357958656.

The previous prime is 667274767. The next prime is 667274771. The reversal of 667274769 is 967472766.

It is a happy number.

667274769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (667274767) and next prime (667274771).

It is not a de Polignac number, because 667274769 - 2¹ = 667274767 is a prime.

It is a super-2 number, since 2×667274769² = 890511234688006722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (667274767) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 778189 + ... + 779045.

It is an arithmetic number, because the mean of its divisors is an integer number (24360336).

Almost surely, 2^667274769 is an apocalyptic number.

It is an amenable number.

667274769 is a deficient number, since it is larger than the sum of its proper divisors (502021359).

667274769 is a wasteful number, since it uses less digits than its factorization.

667274769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614 (or 1611 counting only the distinct ones).

The product of its digits is 5334336, while the sum is 54.

The square root of 667274769 is about 25831.6621416432. The cubic root of 667274769 is about 873.8459971767.

The spelling of 667274769 in words is "six hundred sixty-seven million, two hundred seventy-four thousand, seven hundred sixty-nine".