16540077 has 4 divisors (see below), whose sum is σ = 22053440. Its totient is φ = 11026716.

The previous prime is 16540067. The next prime is 16540091. The reversal of 16540077 is 77004561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16540077 - 2⁴ = 16540061 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 (16540037) 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, 2756677 + ... + 2756682.

It is an arithmetic number, because the mean of its divisors is an integer number (5513360).

Almost surely, 2^16540077 is an apocalyptic number.

It is an amenable number.

16540077 is a deficient number, since it is larger than the sum of its proper divisors (5513363).

16540077 is an equidigital number, since it uses as much as digits as its factorization.

16540077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5513362.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 16540077 is about 4066.9493480986. The cubic root of 16540077 is about 254.7881208075.

The spelling of 16540077 in words is "sixteen million, five hundred forty thousand, seventy-seven".