1770997 has 2 divisors, whose sum is σ = 1770998. Its totient is φ = 1770996.

The previous prime is 1770991. The next prime is 1771027. The reversal of 1770997 is 7990771.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1343281 + 427716 = 1159^2 + 654^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1770997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1770991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 885498 + 885499.

It is an arithmetic number, because the mean of its divisors is an integer number (885499).

2^1770997 is an apocalyptic number.

It is an amenable number.

1770997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1770997 is an equidigital number, since it uses as much as digits as its factorization.

1770997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27783, while the sum is 40.

The square root of 1770997 is about 1330.7881123605. The cubic root of 1770997 is about 120.9871579841.

The spelling of 1770997 in words is "one million, seven hundred seventy thousand, nine hundred ninety-seven".