801865401 has 16 divisors (see below), whose sum is σ = 1151236800. Its totient is φ = 494601728.

The previous prime is 801865397. The next prime is 801865439. The reversal of 801865401 is 104568108.

It is a cyclic number.

It is not a de Polignac number, because 801865401 - 2² = 801865397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (801865481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130236 + ... + 136253.

It is an arithmetic number, because the mean of its divisors is an integer number (71952300).

Almost surely, 2^801865401 is an apocalyptic number.

It is an amenable number.

801865401 is a deficient number, since it is larger than the sum of its proper divisors (349371399).

801865401 is a wasteful number, since it uses less digits than its factorization.

801865401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266568.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 801865401 is about 28317.2279893354. The cubic root of 801865401 is about 929.0387420052.

The spelling of 801865401 in words is "eight hundred one million, eight hundred sixty-five thousand, four hundred one".