1396820766 has 32 divisors (see below), whose sum is σ = 3060950400. Its totient is φ = 421426080.

The previous prime is 1396820749. The next prime is 1396820771. The reversal of 1396820766 is 6670286931.

It is a super-2 number, since 2×1396820766² = 3902216504657653512, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31096 + ... + 61323.

It is an arithmetic number, because the mean of its divisors is an integer number (95654700).

Almost surely, 2^1396820766 is an apocalyptic number.

1396820766 is an abundant number, since it is smaller than the sum of its proper divisors (1664129634).

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

1396820766 is a wasteful number, since it uses less digits than its factorization.

1396820766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92664.

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 1396820766 is about 37374.0654197533. The cubic root of 1396820766 is about 1117.8414969605.

The spelling of 1396820766 in words is "one billion, three hundred ninety-six million, eight hundred twenty thousand, seven hundred sixty-six".