999662622 has 24 divisors (see below), whose sum is σ = 2325746376. Its totient is φ = 285617808.

The previous prime is 999662621. The next prime is 999662647. The reversal of 999662622 is 226266999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999662621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1699813 + ... + 1700400.

It is an arithmetic number, because the mean of its divisors is an integer number (96906099).

Almost surely, 2^999662622 is an apocalyptic number.

999662622 is an abundant number, since it is smaller than the sum of its proper divisors (1326083754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999662622 is a wasteful number, since it uses less digits than its factorization.

999662622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3400232 (or 3400225 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 51.

The square root of 999662622 is about 31617.4417371172. The cubic root of 999662622 is about 999.8875280172.

The spelling of 999662622 in words is "nine hundred ninety-nine million, six hundred sixty-two thousand, six hundred twenty-two".