990773078 has 8 divisors (see below), whose sum is σ = 1486372680. Its totient is φ = 495315520.

The previous prime is 990773057. The next prime is 990773099. The reversal of 990773078 is 870377099.

It is an interprime number because it is at equal distance from previous prime (990773057) and next prime (990773099).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15908 + ... + 47271.

It is an arithmetic number, because the mean of its divisors is an integer number (185796585).

Almost surely, 2^990773078 is an apocalyptic number.

990773078 is a deficient number, since it is larger than the sum of its proper divisors (495599602).

990773078 is a wasteful number, since it uses less digits than its factorization.

990773078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71022.

The product of its (nonzero) digits is 666792, while the sum is 50.

The square root of 990773078 is about 31476.5480635981. The cubic root of 990773078 is about 996.9148509771.

The spelling of 990773078 in words is "nine hundred ninety million, seven hundred seventy-three thousand, seventy-eight".