11801797 has 6 divisors (see below), whose sum is σ = 13728678. Its totient is φ = 10115784.

The previous prime is 11801771. The next prime is 11801821. The reversal of 11801797 is 79710811.

It can be written as a sum of positive squares in only one way, i.e., 7001316 + 4800481 = 2646^2 + 2191^2 .

It is not a de Polignac number, because 11801797 - 2¹⁵ = 11769029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11801767) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 120378 + ... + 120475.

It is an arithmetic number, because the mean of its divisors is an integer number (2288113).

Almost surely, 2^11801797 is an apocalyptic number.

It is an amenable number.

11801797 is a deficient number, since it is larger than the sum of its proper divisors (1926881).

11801797 is an equidigital number, since it uses as much as digits as its factorization.

11801797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240867 (or 240860 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 34.

The square root of 11801797 is about 3435.3743609685. The cubic root of 11801797 is about 227.6753677421.

The spelling of 11801797 in words is "eleven million, eight hundred one thousand, seven hundred ninety-seven".