1397687327 has 16 divisors (see below), whose sum is σ = 1468031040. Its totient is φ = 1329619200.

The previous prime is 1397687303. The next prime is 1397687353. The reversal of 1397687327 is 7237867931.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1397687327 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397687377) 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, 226499 + ... + 232587.

It is an arithmetic number, because the mean of its divisors is an integer number (91751940).

Almost surely, 2^1397687327 is an apocalyptic number.

1397687327 is a deficient number, since it is larger than the sum of its proper divisors (70343713).

1397687327 is an equidigital number, since it uses as much as digits as its factorization.

1397687327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6274.

The product of its digits is 2667168, while the sum is 53.

The square root of 1397687327 is about 37385.6567014677. The cubic root of 1397687327 is about 1118.0726116990.

The spelling of 1397687327 in words is "one billion, three hundred ninety-seven million, six hundred eighty-seven thousand, three hundred twenty-seven".