16779023 has 4 divisors (see below), whose sum is σ = 17357640. Its totient is φ = 16200408.

The previous prime is 16779013. The next prime is 16779041. The reversal of 16779023 is 32097761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32097761 = 89 ⋅360649.

It is a cyclic number.

It is not a de Polignac number, because 16779023 - 2⁶ = 16778959 is a prime.

It is a super-2 number, since 2×16779023² = 563071225669058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16779013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289265 + ... + 289322.

It is an arithmetic number, because the mean of its divisors is an integer number (4339410).

Almost surely, 2^16779023 is an apocalyptic number.

16779023 is a deficient number, since it is larger than the sum of its proper divisors (578617).

16779023 is an equidigital number, since it uses as much as digits as its factorization.

16779023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578616.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 16779023 is about 4096.2205751156. The cubic root of 16779023 is about 256.0091905473.

The spelling of 16779023 in words is "sixteen million, seven hundred seventy-nine thousand, twenty-three".