11765816 has 8 divisors (see below), whose sum is σ = 22060920. Its totient is φ = 5882904.

The previous prime is 11765813. The next prime is 11765867. The reversal of 11765816 is 61856711.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×11765816² = 276868852291712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11765813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 735356 + ... + 735371.

It is an arithmetic number, because the mean of its divisors is an integer number (2757615).

Almost surely, 2^11765816 is an apocalyptic number.

It is an amenable number.

11765816 is a deficient number, since it is larger than the sum of its proper divisors (10295104).

11765816 is a wasteful number, since it uses less digits than its factorization.

11765816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470733 (or 1470729 counting only the distinct ones).

The product of its digits is 10080, while the sum is 35.

The square root of 11765816 is about 3430.1335250978. The cubic root of 11765816 is about 227.4437553669.

The spelling of 11765816 in words is "eleven million, seven hundred sixty-five thousand, eight hundred sixteen".