1386507 has 8 divisors (see below), whose sum is σ = 1854160. Its totient is φ = 921600.

The previous prime is 1386499. The next prime is 1386551. The reversal of 1386507 is 7056831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1386507 - 2³ = 1386499 is a prime.

It is a super-2 number, since 2×1386507² = 3844803322098, which contains 22 as substring.

It is the 1178-th Hogben number.

It is a Duffinian number.

1386507 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1386557) by changing a digit.

It is a nontrivial repunit in base 1177.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1419 + ... + 2187.

It is an arithmetic number, because the mean of its divisors is an integer number (231770).

2^1386507 is an apocalyptic number.

1386507 is a deficient number, since it is larger than the sum of its proper divisors (467653).

1386507 is an equidigital number, since it uses as much as digits as its factorization.

1386507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1386507 is about 1177.5003184713. The cubic root of 1386507 is about 111.5083412556.

The spelling of 1386507 in words is "one million, three hundred eighty-six thousand, five hundred seven".