16620650 has 24 divisors (see below), whose sum is σ = 31914624. Its totient is φ = 6433200.

The previous prime is 16620601. The next prime is 16620671. The reversal of 16620650 is 5602661.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3812 + ... + 6911.

It is an arithmetic number, because the mean of its divisors is an integer number (1329776).

Almost surely, 2^16620650 is an apocalyptic number.

16620650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16620650 is a deficient number, since it is larger than the sum of its proper divisors (15293974).

16620650 is a wasteful number, since it uses less digits than its factorization.

16620650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10766 (or 10761 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 16620650 is about 4076.8431414515. The cubic root of 16620650 is about 255.2011740691.

The spelling of 16620650 in words is "sixteen million, six hundred twenty thousand, six hundred fifty".