2497656787 has 2 divisors, whose sum is σ = 2497656788. Its totient is φ = 2497656786.

The previous prime is 2497656757. The next prime is 2497656793. The reversal of 2497656787 is 7876567942.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2497656787 - 2²³ = 2489268179 is a prime.

It is not a weakly prime, because it can be changed into another prime (2497656757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1248828393 + 1248828394.

It is an arithmetic number, because the mean of its divisors is an integer number (1248828394).

Almost surely, 2^2497656787 is an apocalyptic number.

2497656787 is a deficient number, since it is larger than the sum of its proper divisors (1).

2497656787 is an equidigital number, since it uses as much as digits as its factorization.

2497656787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35562240, while the sum is 61.

The square root of 2497656787 is about 49976.5623767782. The cubic root of 2497656787 is about 1356.7846451728.

The spelling of 2497656787 in words is "two billion, four hundred ninety-seven million, six hundred fifty-six thousand, seven hundred eighty-seven".