1386710680 has 16 divisors (see below), whose sum is σ = 3120099120. Its totient is φ = 554684256.

The previous prime is 1386710659. The next prime is 1386710729. The reversal of 1386710680 is 860176831.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 34667767 = 1386710680 / (1 + 3 + 8 + 6 + 7 + 1 + 0 + 6 + 8 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17333844 + ... + 17333923.

It is an arithmetic number, because the mean of its divisors is an integer number (195006195).

Almost surely, 2^1386710680 is an apocalyptic number.

1386710680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1386710680 is an abundant number, since it is smaller than the sum of its proper divisors (1733388440).

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

1386710680 is a wasteful number, since it uses less digits than its factorization.

1386710680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34667778 (or 34667774 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1386710680 is about 37238.5644191610. The cubic root of 1386710680 is about 1115.1380123694.

The spelling of 1386710680 in words is "one billion, three hundred eighty-six million, seven hundred ten thousand, six hundred eighty".