801377681 has 8 divisors (see below), whose sum is σ = 867792744. Its totient is φ = 735644160.

The previous prime is 801377663. The next prime is 801377711. The reversal of 801377681 is 186773108.

It can be written as a sum of positive squares in 4 ways, for example, as 189310081 + 612067600 = 13759^2 + 24740^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 801377681 - 2⁶ = 801377617 is a prime.

It is a super-2 number, since 2×801377681² = 1284412375209875522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (801377651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167936 + ... + 172641.

It is an arithmetic number, because the mean of its divisors is an integer number (108474093).

Almost surely, 2^801377681 is an apocalyptic number.

It is an amenable number.

801377681 is a deficient number, since it is larger than the sum of its proper divisors (66415063).

801377681 is a wasteful number, since it uses less digits than its factorization.

801377681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340771.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 801377681 is about 28308.6149608207. The cubic root of 801377681 is about 928.8503468493.

The spelling of 801377681 in words is "eight hundred one million, three hundred seventy-seven thousand, six hundred eighty-one".