88778797 has 2 divisors, whose sum is σ = 88778798. Its totient is φ = 88778796.

The previous prime is 88778783. The next prime is 88778821. The reversal of 88778797 is 79787788.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73770921 + 15007876 = 8589^2 + 3874^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88778797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88778717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44389398 + 44389399.

It is an arithmetic number, because the mean of its divisors is an integer number (44389399).

Almost surely, 2^88778797 is an apocalyptic number.

It is an amenable number.

88778797 is a deficient number, since it is larger than the sum of its proper divisors (1).

88778797 is an equidigital number, since it uses as much as digits as its factorization.

88778797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11063808, while the sum is 61.

The square root of 88778797 is about 9422.2501028151. The cubic root of 88778797 is about 446.1043094251.

The spelling of 88778797 in words is "eighty-eight million, seven hundred seventy-eight thousand, seven hundred ninety-seven".