2257666724 has 6 divisors (see below), whose sum is σ = 3950916774. Its totient is φ = 1128833360.

The previous prime is 2257666721. The next prime is 2257666727. The reversal of 2257666724 is 4276667522.

It is an interprime number because it is at equal distance from previous prime (2257666721) and next prime (2257666727).

It can be written as a sum of positive squares in only one way, i.e., 1812034624 + 445632100 = 42568^2 + 21110^2 .

It is not an unprimeable number, because it can be changed into a prime (2257666721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282208337 + ... + 282208344.

It is an arithmetic number, because the mean of its divisors is an integer number (658486129).

Almost surely, 2^2257666724 is an apocalyptic number.

It is an amenable number.

2257666724 is a deficient number, since it is larger than the sum of its proper divisors (1693250050).

2257666724 is a wasteful number, since it uses less digits than its factorization.

2257666724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564416685 (or 564416683 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 47.

The square root of 2257666724 is about 47514.9105439545. The cubic root of 2257666724 is about 1311.8573432352.

The spelling of 2257666724 in words is "two billion, two hundred fifty-seven million, six hundred sixty-six thousand, seven hundred twenty-four".