77000623 has 4 divisors (see below), whose sum is σ = 88000720. Its totient is φ = 66000528.

The previous prime is 77000611. The next prime is 77000629. The reversal of 77000623 is 32600077.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32600077 = 89 ⋅366293.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77000623 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 (77000629) 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, 5500038 + ... + 5500051.

It is an arithmetic number, because the mean of its divisors is an integer number (22000180).

Almost surely, 2^77000623 is an apocalyptic number.

77000623 is a deficient number, since it is larger than the sum of its proper divisors (11000097).

77000623 is a wasteful number, since it uses less digits than its factorization.

77000623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11000096.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 77000623 is about 8774.9998860399. Note that the first 3 decimals coincide. The cubic root of 77000623 is about 425.4332338859.

The spelling of 77000623 in words is "seventy-seven million, six hundred twenty-three", and thus it is an aban number.