1406743686 has 20 divisors (see below), whose sum is σ = 3152148252. Its totient is φ = 468914508.

The previous prime is 1406743651. The next prime is 1406743697. The reversal of 1406743686 is 6863476041.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4341640 + ... + 4341963.

Almost surely, 2^1406743686 is an apocalyptic number.

1406743686 is an abundant number, since it is smaller than the sum of its proper divisors (1745404566).

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

1406743686 is an equidigital number, since it uses as much as digits as its factorization.

1406743686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8683617 (or 8683608 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 1406743686 is about 37506.5819023808. The cubic root of 1406743686 is about 1120.4822768872.

The spelling of 1406743686 in words is "one billion, four hundred six million, seven hundred forty-three thousand, six hundred eighty-six".