766976850640 has 240 divisors, whose sum is σ = 2407413522816. Its totient is φ = 220668364800.

The previous prime is 766976850587. The next prime is 766976850643. The reversal of 766976850640 is 46058679667.

766976850640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766976850643) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 672670 + ... + 1409410.

Almost surely, 2^766976850640 is an apocalyptic number.

766976850640 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 766976850640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1203706761408).

766976850640 is an abundant number, since it is smaller than the sum of its proper divisors (1640436672176).

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

766976850640 is a wasteful number, since it uses less digits than its factorization.

766976850640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736798 (or 736779 counting only the distinct ones).

The product of its (nonzero) digits is 91445760, while the sum is 64.

The spelling of 766976850640 in words is "seven hundred sixty-six billion, nine hundred seventy-six million, eight hundred fifty thousand, six hundred forty".