16642613 has 24 divisors (see below), whose sum is σ = 19500480. Its totient is φ = 14152320.

The previous prime is 16642601. The next prime is 16642621. The reversal of 16642613 is 31624661.

It is a happy number.

It is not a de Polignac number, because 16642613 - 2¹⁴ = 16626229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16642013) 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, 227945 + ... + 228017.

It is an arithmetic number, because the mean of its divisors is an integer number (812520).

Almost surely, 2^16642613 is an apocalyptic number.

16642613 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16642613 is a deficient number, since it is larger than the sum of its proper divisors (2857867).

16642613 is a wasteful number, since it uses less digits than its factorization.

16642613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 176 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 16642613 is about 4079.5358804648. The cubic root of 16642613 is about 255.3135346233.

The spelling of 16642613 in words is "sixteen million, six hundred forty-two thousand, six hundred thirteen".