774400687 has 4 divisors (see below), whose sum is σ = 775408480. Its totient is φ = 773392896.

The previous prime is 774400681. The next prime is 774400699. The reversal of 774400687 is 786004477.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 786004477 = 439 ⋅1790443.

It is a cyclic number.

It is not a de Polignac number, because 774400687 - 2¹⁹ = 773876399 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 (774400681) 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, 502743 + ... + 504280.

It is an arithmetic number, because the mean of its divisors is an integer number (193852120).

Almost surely, 2^774400687 is an apocalyptic number.

774400687 is a deficient number, since it is larger than the sum of its proper divisors (1007793).

774400687 is a wasteful number, since it uses less digits than its factorization.

774400687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007792.

The product of its (nonzero) digits is 263424, while the sum is 43.

The square root of 774400687 is about 27828.0557531424. The cubic root of 774400687 is about 918.3084414216.

The spelling of 774400687 in words is "seven hundred seventy-four million, four hundred thousand, six hundred eighty-seven".