797770 has 8 divisors (see below), whose sum is σ = 1436004. Its totient is φ = 319104.

The previous prime is 797767. The next prime is 797773. The reversal of 797770 is 77797.

It is an interprime number because it is at equal distance from previous prime (797767) and next prime (797773).

It can be written as a sum of positive squares in 2 ways, for example, as 776161 + 21609 = 881^2 + 147^2 .

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

It is not an unprimeable number, because it can be changed into a prime (797773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39879 + ... + 39898.

2⁷⁹⁷⁷⁷⁰ is an apocalyptic number.

797770 is a deficient number, since it is larger than the sum of its proper divisors (638234).

797770 is a wasteful number, since it uses less digits than its factorization.

797770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79784.

The product of its (nonzero) digits is 21609, while the sum is 37.

The square root of 797770 is about 893.1797131597. The cubic root of 797770 is about 92.7454402090.

Subtracting from 797770 its product of nonzero digits (21609), we obtain a square (776161 = 881²).

The spelling of 797770 in words is "seven hundred ninety-seven thousand, seven hundred seventy".