766898646 has 16 divisors (see below), whose sum is σ = 1583275008. Its totient is φ = 247386600.

The previous prime is 766898621. The next prime is 766898647. The reversal of 766898646 is 646898667.

It is a self number, because there is not a number n which added to its sum of digits gives 766898646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766898647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2061370 + ... + 2061741.

It is an arithmetic number, because the mean of its divisors is an integer number (98954688).

Almost surely, 2^766898646 is an apocalyptic number.

766898646 is an abundant number, since it is smaller than the sum of its proper divisors (816376362).

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

766898646 is a wasteful number, since it uses less digits than its factorization.

766898646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4123147.

The product of its digits is 20901888, while the sum is 60.

The square root of 766898646 is about 27692.9349473832. The cubic root of 766898646 is about 915.3334292006. Note that the first 3 decimals are identical.

The spelling of 766898646 in words is "seven hundred sixty-six million, eight hundred ninety-eight thousand, six hundred forty-six".