776706072 has 64 divisors (see below), whose sum is σ = 2063080800. Its totient is φ = 243210240.

The previous prime is 776706071. The next prime is 776706079. The reversal of 776706072 is 270607677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (776706071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10672 + ... + 40832.

Almost surely, 2^776706072 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 776706072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1031540400).

776706072 is an abundant number, since it is smaller than the sum of its proper divisors (1286374728).

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

776706072 is a wasteful number, since it uses less digits than its factorization.

776706072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30236 (or 30232 counting only the distinct ones).

The product of its (nonzero) digits is 172872, while the sum is 42.

The square root of 776706072 is about 27869.4469266973. The cubic root of 776706072 is about 919.2188044034.

The spelling of 776706072 in words is "seven hundred seventy-six million, seven hundred six thousand, seventy-two".