1390662 has 64 divisors (see below), whose sum is σ = 3816960. Its totient is φ = 365472.

The previous prime is 1390643. The next prime is 1390681. The reversal of 1390662 is 2660931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1390643) and next prime (1390681).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4773 + ... + 5055.

It is an arithmetic number, because the mean of its divisors is an integer number (59640).

2^1390662 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1390662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1908480).

1390662 is an abundant number, since it is smaller than the sum of its proper divisors (2426298).

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

1390662 is a wasteful number, since it uses less digits than its factorization.

1390662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 1390662 is about 1179.2633293713. The cubic root of 1390662 is about 111.6196173168.

The spelling of 1390662 in words is "one million, three hundred ninety thousand, six hundred sixty-two".