80777901 has 8 divisors (see below), whose sum is σ = 107753184. Its totient is φ = 53827280.

The previous prime is 80777899. The next prime is 80777923. The reversal of 80777901 is 10977708.

It is a happy number.

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 80777901 - 2¹ = 80777899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80777901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80777941) 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, 3766 + ... + 13256.

It is an arithmetic number, because the mean of its divisors is an integer number (13469148).

Almost surely, 2^80777901 is an apocalyptic number.

It is an amenable number.

80777901 is a deficient number, since it is larger than the sum of its proper divisors (26975283).

80777901 is a wasteful number, since it uses less digits than its factorization.

80777901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12331.

The product of its (nonzero) digits is 24696, while the sum is 39.

The square root of 80777901 is about 8987.6526968948. The cubic root of 80777901 is about 432.2790496050.

The spelling of 80777901 in words is "eighty million, seven hundred seventy-seven thousand, nine hundred one".