990766694 has 4 divisors (see below), whose sum is σ = 1486150044. Its totient is φ = 495383346.

The previous prime is 990766691. The next prime is 990766769. The reversal of 990766694 is 496667099.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990766691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247691672 + ... + 247691675.

It is an arithmetic number, because the mean of its divisors is an integer number (371537511).

Almost surely, 2^990766694 is an apocalyptic number.

990766694 is a deficient number, since it is larger than the sum of its proper divisors (495383350).

990766694 is a wasteful number, since it uses less digits than its factorization.

990766694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495383349.

The product of its (nonzero) digits is 4408992, while the sum is 56.

The square root of 990766694 is about 31476.4466546019. The cubic root of 990766694 is about 996.9127097811.

The spelling of 990766694 in words is "nine hundred ninety million, seven hundred sixty-six thousand, six hundred ninety-four".