16622487 has 12 divisors (see below), whose sum is σ = 27440400. Its totient is φ = 9498528.

The previous prime is 16622407. The next prime is 16622513. The reversal of 16622487 is 78422661.

It is not a de Polignac number, because 16622487 - 2²⁰ = 15573911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16622407) 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, 131862 + ... + 131987.

It is an arithmetic number, because the mean of its divisors is an integer number (2286700).

Almost surely, 2^16622487 is an apocalyptic number.

16622487 is a deficient number, since it is larger than the sum of its proper divisors (10817913).

16622487 is a wasteful number, since it uses less digits than its factorization.

16622487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263862 (or 263859 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 16622487 is about 4077.0684320968. The cubic root of 16622487 is about 255.2105757730.

The spelling of 16622487 in words is "sixteen million, six hundred twenty-two thousand, four hundred eighty-seven".