2257671987 has 16 divisors (see below), whose sum is σ = 3391810560. Its totient is φ = 1483914600.

The previous prime is 2257671967. The next prime is 2257672007. The reversal of 2257671987 is 7891767522.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2257671967) and next prime (2257672007).

It is not a de Polignac number, because 2257671987 - 2¹² = 2257667891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2257671967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 586939 + ... + 590772.

It is an arithmetic number, because the mean of its divisors is an integer number (211988160).

Almost surely, 2^2257671987 is an apocalyptic number.

2257671987 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2257671987 is a deficient number, since it is larger than the sum of its proper divisors (1134138573).

2257671987 is a wasteful number, since it uses less digits than its factorization.

2257671987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177791 (or 1177785 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 54.

The square root of 2257671987 is about 47514.9659265373. The cubic root of 2257671987 is about 1311.8583626209.

The spelling of 2257671987 in words is "two billion, two hundred fifty-seven million, six hundred seventy-one thousand, nine hundred eighty-seven".