667354065 has 32 divisors (see below), whose sum is σ = 1227156480. Its totient is φ = 303363264.

The previous prime is 667354021. The next prime is 667354073. The reversal of 667354065 is 560453766.

667354065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 667354065 - 2⁹ = 667353553 is a prime.

It is a super-2 number, since 2×667354065² = 890722896144048450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1042 + ... + 36548.

It is an arithmetic number, because the mean of its divisors is an integer number (38348640).

Almost surely, 2^667354065 is an apocalyptic number.

It is an amenable number.

667354065 is a deficient number, since it is larger than the sum of its proper divisors (559802415).

667354065 is a wasteful number, since it uses less digits than its factorization.

667354065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35701.

The product of its (nonzero) digits is 453600, while the sum is 42.

The square root of 667354065 is about 25833.1969566293. The cubic root of 667354065 is about 873.8806104778.

The spelling of 667354065 in words is "six hundred sixty-seven million, three hundred fifty-four thousand, sixty-five".