774989 has 8 divisors (see below), whose sum is σ = 807840. Its totient is φ = 742896.

The previous prime is 774959. The next prime is 774997. The reversal of 774989 is 989477.

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

It is not a de Polignac number, because 774989 - 2⁸ = 774733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (774919) 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, 2747 + ... + 3015.

It is an arithmetic number, because the mean of its divisors is an integer number (100980).

2⁷⁷⁴⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

774989 is a deficient number, since it is larger than the sum of its proper divisors (32851).

774989 is a wasteful number, since it uses less digits than its factorization.

774989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379.

The product of its digits is 127008, while the sum is 44.

The square root of 774989 is about 880.3345954806. The cubic root of 774989 is about 91.8540929181.

The spelling of 774989 in words is "seven hundred seventy-four thousand, nine hundred eighty-nine".