77273345 has 8 divisors (see below), whose sum is σ = 93082176. Its totient is φ = 61582576.

The previous prime is 77273321. The next prime is 77273351. The reversal of 77273345 is 54337277.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77273345 - 2²⁴ = 60496129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77273299 and 77273308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28067 + ... + 30696.

It is an arithmetic number, because the mean of its divisors is an integer number (11635272).

Almost surely, 2^77273345 is an apocalyptic number.

It is an amenable number.

77273345 is a deficient number, since it is larger than the sum of its proper divisors (15808831).

77273345 is a wasteful number, since it uses less digits than its factorization.

77273345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59031.

The product of its digits is 123480, while the sum is 38.

The square root of 77273345 is about 8790.5258659536. The cubic root of 77273345 is about 425.9349107428.

The spelling of 77273345 in words is "seventy-seven million, two hundred seventy-three thousand, three hundred forty-five".