1396667 has 2 divisors, whose sum is σ = 1396668. Its totient is φ = 1396666.

The previous prime is 1396663. The next prime is 1396673. The reversal of 1396667 is 7666931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1396667 - 2² = 1396663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1396667.

It is not a weakly prime, because it can be changed into another prime (1396663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698333 + 698334.

It is an arithmetic number, because the mean of its divisors is an integer number (698334).

2^1396667 is an apocalyptic number.

1396667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1396667 is an equidigital number, since it uses as much as digits as its factorization.

1396667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 38.

The square root of 1396667 is about 1181.8066677761. The cubic root of 1396667 is about 111.7800477066.

The spelling of 1396667 in words is "one million, three hundred ninety-six thousand, six hundred sixty-seven".