667020348 has 18 divisors (see below), whose sum is σ = 1686079304. Its totient is φ = 222340104.

The previous prime is 667020331. The next prime is 667020353. The reversal of 667020348 is 843020766.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×667020348² = 889832289292082208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 18528343 = 667020348 / (6 + 6 + 7 + 0 + 2 + 0 + 3 + 4 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9264136 + ... + 9264207.

Almost surely, 2^667020348 is an apocalyptic number.

It is an amenable number.

667020348 is an abundant number, since it is smaller than the sum of its proper divisors (1019058956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667020348 is a wasteful number, since it uses less digits than its factorization.

667020348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18528353 (or 18528348 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 667020348 is about 25826.7370761388. The cubic root of 667020348 is about 873.7349219770.

The spelling of 667020348 in words is "six hundred sixty-seven million, twenty thousand, three hundred forty-eight".