776290064 has 80 divisors (see below), whose sum is σ = 1693016640. Its totient is φ = 341760000.

The previous prime is 776290037. The next prime is 776290121. The reversal of 776290064 is 460092677.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1291364 + ... + 1291964.

It is an arithmetic number, because the mean of its divisors is an integer number (21162708).

Almost surely, 2^776290064 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 776290064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (846508320).

776290064 is an abundant number, since it is smaller than the sum of its proper divisors (916726576).

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

776290064 is a wasteful number, since it uses less digits than its factorization.

776290064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 834 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 776290064 is about 27861.9824133173. The cubic root of 776290064 is about 919.0546622297.

The spelling of 776290064 in words is "seven hundred seventy-six million, two hundred ninety thousand, sixty-four".