1400687 has 2 divisors, whose sum is σ = 1400688. Its totient is φ = 1400686.

The previous prime is 1400669. The next prime is 1400689. The reversal of 1400687 is 7860041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1400687 - 2¹⁰ = 1399663 is a prime.

Together with 1400689, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1400689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700343 + 700344.

It is an arithmetic number, because the mean of its divisors is an integer number (700344).

2^1400687 is an apocalyptic number.

1400687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400687 is an equidigital number, since it uses as much as digits as its factorization.

1400687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 1400687 is about 1183.5062315003. The cubic root of 1400687 is about 111.8871897707.

The spelling of 1400687 in words is "one million, four hundred thousand, six hundred eighty-seven".