878627797 has 2 divisors, whose sum is σ = 878627798. Its totient is φ = 878627796.

The previous prime is 878627731. The next prime is 878627803. The reversal of 878627797 is 797726878.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 853165681 + 25462116 = 29209^2 + 5046^2 .

It is a cyclic number.

It is not a de Polignac number, because 878627797 - 2¹⁹ = 878103509 is a prime.

It is a super-2 number, since 2×878627797² = 1543973611322146418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (878627707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439313898 + 439313899.

It is an arithmetic number, because the mean of its divisors is an integer number (439313899).

Almost surely, 2^878627797 is an apocalyptic number.

It is an amenable number.

878627797 is a deficient number, since it is larger than the sum of its proper divisors (1).

878627797 is an equidigital number, since it uses as much as digits as its factorization.

878627797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16595712, while the sum is 61.

The square root of 878627797 is about 29641.6564483161. The cubic root of 878627797 is about 957.7856213311.

It can be divided in two parts, 87862 and 7797, that added together give a palindrome (95659).

The spelling of 878627797 in words is "eight hundred seventy-eight million, six hundred twenty-seven thousand, seven hundred ninety-seven".