667145115 has 48 divisors (see below), whose sum is σ = 1423251648. Its totient is φ = 281518848.

The previous prime is 667145057. The next prime is 667145123. The reversal of 667145115 is 511541766.

It is a happy number.

It is not a de Polignac number, because 667145115 - 2⁶ = 667145051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 667145115.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 77364 + ... + 85553.

It is an arithmetic number, because the mean of its divisors is an integer number (29651076).

Almost surely, 2^667145115 is an apocalyptic number.

667145115 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

667145115 is an abundant number, since it is smaller than the sum of its proper divisors (756106533).

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

667145115 is a wasteful number, since it uses less digits than its factorization.

667145115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162948 (or 162945 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 667145115 is about 25829.1524251184. The cubic root of 667145115 is about 873.7893963215.

The spelling of 667145115 in words is "six hundred sixty-seven million, one hundred forty-five thousand, one hundred fifteen".