990993662 has 4 divisors (see below), whose sum is σ = 1486490496. Its totient is φ = 495496830.

The previous prime is 990993649. The next prime is 990993667. The reversal of 990993662 is 266399099.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 266399099 = 41 ⋅6497539.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990993667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247748414 + ... + 247748417.

It is an arithmetic number, because the mean of its divisors is an integer number (371622624).

Almost surely, 2^990993662 is an apocalyptic number.

990993662 is a deficient number, since it is larger than the sum of its proper divisors (495496834).

990993662 is a wasteful number, since it uses less digits than its factorization.

990993662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495496833.

The product of its (nonzero) digits is 1417176, while the sum is 53.

The square root of 990993662 is about 31480.0518106308. The cubic root of 990993662 is about 996.9888292852.

The spelling of 990993662 in words is "nine hundred ninety million, nine hundred ninety-three thousand, six hundred sixty-two".