16620495 has 24 divisors (see below), whose sum is σ = 27502128. Its totient is φ = 8570880.

The previous prime is 16620493. The next prime is 16620521. The reversal of 16620495 is 59402661.

16620495 is a nontrivial binomial coefficient, being equal to C(5766, 2).

It is not a de Polignac number, because 16620495 - 2¹ = 16620493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16620493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13839 + ... + 14991.

It is an arithmetic number, because the mean of its divisors is an integer number (1145922).

Almost surely, 2^16620495 is an apocalyptic number.

16620495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16620495 is the 5765-th triangular number and also the 2883-rd hexagonal number.

16620495 is a deficient number, since it is larger than the sum of its proper divisors (10881633).

16620495 is a wasteful number, since it uses less digits than its factorization.

16620495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223 (or 1192 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 16620495 is about 4076.8241316005. The cubic root of 16620495 is about 255.2003807527.

The spelling of 16620495 in words is "sixteen million, six hundred twenty thousand, four hundred ninety-five".