77272673 has 4 divisors (see below), whose sum is σ = 77347248. Its totient is φ = 77198100.

The previous prime is 77272661. The next prime is 77272681. The reversal of 77272673 is 37627277.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37627277 = 19 ⋅1980383.

It is a cyclic number.

It is not a de Polignac number, because 77272673 - 2¹⁸ = 77010529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77272673.

It is not an unprimeable number, because it can be changed into a prime (77272603) 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, 35711 + ... + 37812.

It is an arithmetic number, because the mean of its divisors is an integer number (19336812).

Almost surely, 2^77272673 is an apocalyptic number.

It is an amenable number.

77272673 is a deficient number, since it is larger than the sum of its proper divisors (74575).

77272673 is a wasteful number, since it uses less digits than its factorization.

77272673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74574.

The product of its digits is 172872, while the sum is 41.

The square root of 77272673 is about 8790.4876429013. The cubic root of 77272673 is about 425.9336760390.

The spelling of 77272673 in words is "seventy-seven million, two hundred seventy-two thousand, six hundred seventy-three".