774544680 has 640 divisors, whose sum is σ = 3337044480. Its totient is φ = 156764160.

The previous prime is 774544669. The next prime is 774544697. The reversal of 774544680 is 86445477.

It is a super-2 number, since 2×774544680² = 1199838922632604800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 10909045 + ... + 10909115.

It is an arithmetic number, because the mean of its divisors is an integer number (5214132).

Almost surely, 2^774544680 is an apocalyptic number.

774544680 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 774544680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1668522240).

774544680 is an abundant number, since it is smaller than the sum of its proper divisors (2562499800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

774544680 is a wasteful number, since it uses less digits than its factorization.

774544680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The square root of 774544680 is about 27830.6428240528. The cubic root of 774544680 is about 918.3653550215.

It can be divided in two parts, 7745 and 44680, that added together give a palindrome (52425).

The spelling of 774544680 in words is "seven hundred seventy-four million, five hundred forty-four thousand, six hundred eighty".