16620074 has 8 divisors (see below), whose sum is σ = 25789860. Its totient is φ = 8023456.

The previous prime is 16620049. The next prime is 16620119. The reversal of 16620074 is 47002661.

It can be written as a sum of positive squares in 2 ways, for example, as 16120225 + 499849 = 4015^2 + 707^2 .

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

It is a Curzon 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, 143219 + ... + 143334.

Almost surely, 2^16620074 is an apocalyptic number.

16620074 is a deficient number, since it is larger than the sum of its proper divisors (9169786).

16620074 is a wasteful number, since it uses less digits than its factorization.

16620074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286584.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 16620074 is about 4076.7724979449. The cubic root of 16620074 is about 255.1982259780.

The spelling of 16620074 in words is "sixteen million, six hundred twenty thousand, seventy-four".