877072321 has 2 divisors, whose sum is σ = 877072322. Its totient is φ = 877072320.

The previous prime is 877072289. The next prime is 877072327. The reversal of 877072321 is 123270778.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 554367025 + 322705296 = 23545^2 + 17964^2 .

It is a cyclic number.

It is not a de Polignac number, because 877072321 - 2⁵ = 877072289 is a prime.

It is not a weakly prime, because it can be changed into another prime (877072327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 438536160 + 438536161.

It is an arithmetic number, because the mean of its divisors is an integer number (438536161).

Almost surely, 2^877072321 is an apocalyptic number.

It is an amenable number.

877072321 is a deficient number, since it is larger than the sum of its proper divisors (1).

877072321 is an equidigital number, since it uses as much as digits as its factorization.

877072321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 877072321 is about 29615.4068180736. The cubic root of 877072321 is about 957.2200831971.

The spelling of 877072321 in words is "eight hundred seventy-seven million, seventy-two thousand, three hundred twenty-one".