1390697 has 8 divisors (see below), whose sum is σ = 1733952. Its totient is φ = 1083600.

The previous prime is 1390693. The next prime is 1390699. The reversal of 1390697 is 7960931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1390697 - 2² = 1390693 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1390693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8954 + ... + 9107.

It is an arithmetic number, because the mean of its divisors is an integer number (216744).

2^1390697 is an apocalyptic number.

It is an amenable number.

1390697 is a deficient number, since it is larger than the sum of its proper divisors (343255).

1390697 is a wasteful number, since it uses less digits than its factorization.

1390697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18079.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 1390697 is about 1179.2781690509. The cubic root of 1390697 is about 111.6205537183.

The spelling of 1390697 in words is "one million, three hundred ninety thousand, six hundred ninety-seven".