2687444397 has 12 divisors (see below), whose sum is σ = 4234761024. Its totient is φ = 1628754120.

The previous prime is 2687444393. The next prime is 2687444423. The reversal of 2687444397 is 7934447862.

It is not a de Polignac number, because 2687444397 - 2² = 2687444393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2687444393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13572853 + ... + 13573050.

It is an arithmetic number, because the mean of its divisors is an integer number (352896752).

Almost surely, 2^2687444397 is an apocalyptic number.

It is an amenable number.

2687444397 is a deficient number, since it is larger than the sum of its proper divisors (1547316627).

2687444397 is a wasteful number, since it uses less digits than its factorization.

2687444397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27145920 (or 27145917 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 54.

The square root of 2687444397 is about 51840.5670975926. The cubic root of 2687444397 is about 1390.3148531971.

The spelling of 2687444397 in words is "two billion, six hundred eighty-seven million, four hundred forty-four thousand, three hundred ninety-seven".