766745998 has 4 divisors (see below), whose sum is σ = 1150119000. Its totient is φ = 383372998.

The previous prime is 766745981. The next prime is 766746031. The reversal of 766745998 is 899547667.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 899547667 = 41 ⋅21940187.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191686498 + ... + 191686501.

It is an arithmetic number, because the mean of its divisors is an integer number (287529750).

Almost surely, 2^766745998 is an apocalyptic number.

766745998 is a deficient number, since it is larger than the sum of its proper divisors (383373002).

766745998 is a wasteful number, since it uses less digits than its factorization.

766745998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383373001.

The product of its digits is 22861440, while the sum is 61.

The square root of 766745998 is about 27690.1787282061. The cubic root of 766745998 is about 915.2726940611.

The spelling of 766745998 in words is "seven hundred sixty-six million, seven hundred forty-five thousand, nine hundred ninety-eight".