1206387 has 32 divisors (see below), whose sum is σ = 2204160. Its totient is φ = 635040.

The previous prime is 1206383. The next prime is 1206391. The reversal of 1206387 is 7836021.

1206387 is a `hidden beast` number, since 1 + 20 + 638 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (1206383) and next prime (1206391).

It is not a de Polignac number, because 1206387 - 2² = 1206383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1206387.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2212 + ... + 2702.

It is an arithmetic number, because the mean of its divisors is an integer number (68880).

2^1206387 is an apocalyptic number.

1206387 is a deficient number, since it is larger than the sum of its proper divisors (997773).

1206387 is a wasteful number, since it uses less digits than its factorization.

1206387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1206387 is about 1098.3564995028. The cubic root of 1206387 is about 106.4540567554.

The spelling of 1206387 in words is "one million, two hundred six thousand, three hundred eighty-seven".