776145552 has 160 divisors (see below), whose sum is σ = 2487674112. Its totient is φ = 203046912.

The previous prime is 776145551. The next prime is 776145613. The reversal of 776145552 is 255541677.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (776145551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 597768 + ... + 599064.

Almost surely, 2^776145552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 776145552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1243837056).

776145552 is an abundant number, since it is smaller than the sum of its proper divisors (1711528560).

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

776145552 is a wasteful number, since it uses less digits than its factorization.

776145552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465 (or 1459 counting only the distinct ones).

The product of its digits is 294000, while the sum is 42.

The square root of 776145552 is about 27859.3889380223. The cubic root of 776145552 is about 918.9976291369.

The spelling of 776145552 in words is "seven hundred seventy-six million, one hundred forty-five thousand, five hundred fifty-two".