1420786686 has 16 divisors (see below), whose sum is σ = 3099898368. Its totient is φ = 430541400.

The previous prime is 1420786651. The next prime is 1420786691. The reversal of 1420786686 is 6866870241.

It is a super-2 number, since 2×1420786686² = 4037269614229725192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10763470 + ... + 10763601.

It is an arithmetic number, because the mean of its divisors is an integer number (193743648).

Almost surely, 2^1420786686 is an apocalyptic number.

1420786686 is an abundant number, since it is smaller than the sum of its proper divisors (1679111682).

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

1420786686 is a wasteful number, since it uses less digits than its factorization.

1420786686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21527087.

The product of its (nonzero) digits is 774144, while the sum is 48.

The square root of 1420786686 is about 37693.3241569379. The cubic root of 1420786686 is about 1124.1983915248.

The spelling of 1420786686 in words is "one billion, four hundred twenty million, seven hundred eighty-six thousand, six hundred eighty-six".