1356947 has 2 divisors, whose sum is σ = 1356948. Its totient is φ = 1356946.

The previous prime is 1356919. The next prime is 1356973. The reversal of 1356947 is 7496531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1356947 - 2¹⁰ = 1355923 is a prime.

It is not a weakly prime, because it can be changed into another prime (1356907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678473 + 678474.

It is an arithmetic number, because the mean of its divisors is an integer number (678474).

2^1356947 is an apocalyptic number.

1356947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356947 is an equidigital number, since it uses as much as digits as its factorization.

1356947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 35.

The square root of 1356947 is about 1164.8806805849. The cubic root of 1356947 is about 110.7101982337.

The spelling of 1356947 in words is "one million, three hundred fifty-six thousand, nine hundred forty-seven".