990828646 has 8 divisors (see below), whose sum is σ = 1573669080. Its totient is φ = 466272288.

The previous prime is 990828623. The next prime is 990828647. The reversal of 990828646 is 646828099.

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

It is a junction number, because it is equal to n+sod(n) for n = 990828593 and 990828602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990828647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14570976 + ... + 14571043.

It is an arithmetic number, because the mean of its divisors is an integer number (196708635).

Almost surely, 2^990828646 is an apocalyptic number.

990828646 is a deficient number, since it is larger than the sum of its proper divisors (582840434).

990828646 is a wasteful number, since it uses less digits than its factorization.

990828646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29142038.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The square root of 990828646 is about 31477.4307401351. The cubic root of 990828646 is about 996.9334881168.

The spelling of 990828646 in words is "nine hundred ninety million, eight hundred twenty-eight thousand, six hundred forty-six".