766666884403 has 8 divisors (see below), whose sum is σ = 894072168800. Its totient is φ = 657143043480.

The previous prime is 766666884371. The next prime is 766666884479. The reversal of 766666884403 is 304488666667.

It is not a de Polignac number, because 766666884403 - 2⁵ = 766666884371 is a prime.

It is a super-2 number, since 2×766666884403² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (766666884803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1117589868 + ... + 1117590553.

It is an arithmetic number, because the mean of its divisors is an integer number (111759021100).

Almost surely, 2^766666884403 is an apocalyptic number.

766666884403 is a deficient number, since it is larger than the sum of its proper divisors (127405284397).

766666884403 is an equidigital number, since it uses as much as digits as its factorization.

766666884403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235180442 (or 2235180428 counting only the distinct ones).

The product of its (nonzero) digits is 167215104, while the sum is 64.

The spelling of 766666884403 in words is "seven hundred sixty-six billion, six hundred sixty-six million, eight hundred eighty-four thousand, four hundred three".