774897091 has 8 divisors (see below), whose sum is σ = 800953200. Its totient is φ = 749271840.

The previous prime is 774897073. The next prime is 774897107. The reversal of 774897091 is 190798477.

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

It is a cyclic number.

It is not a de Polignac number, because 774897091 - 2⁵ = 774897059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (774897001) 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, 104056 + ... + 111253.

It is an arithmetic number, because the mean of its divisors is an integer number (100119150).

Almost surely, 2^774897091 is an apocalyptic number.

774897091 is a deficient number, since it is larger than the sum of its proper divisors (26056109).

774897091 is a wasteful number, since it uses less digits than its factorization.

774897091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215429.

The product of its (nonzero) digits is 889056, while the sum is 52.

The square root of 774897091 is about 27836.9734525864. The cubic root of 774897091 is about 918.5046166157.

The spelling of 774897091 in words is "seven hundred seventy-four million, eight hundred ninety-seven thousand, ninety-one".