2015667 has 6 divisors (see below), whose sum is σ = 2911532. Its totient is φ = 1343772.

The previous prime is 2015633. The next prime is 2015669. The reversal of 2015667 is 7665102.

It is not a de Polignac number, because 2015667 - 2⁸ = 2015411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2015667.

It is not an unprimeable number, because it can be changed into a prime (2015669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111973 + ... + 111990.

2^2015667 is an apocalyptic number.

2015667 is a deficient number, since it is larger than the sum of its proper divisors (895865).

2015667 is a wasteful number, since it uses less digits than its factorization.

2015667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223969 (or 223966 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 2015667 is about 1419.7418779482. The cubic root of 2015667 is about 126.3202360551.

The spelling of 2015667 in words is "two million, fifteen thousand, six hundred sixty-seven".