77090073 has 4 divisors (see below), whose sum is σ = 102786768. Its totient is φ = 51393380.

The previous prime is 77090063. The next prime is 77090077. The reversal of 77090073 is 37009077.

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 a cyclic number.

It is not a de Polignac number, because 77090073 - 2⁶ = 77090009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77090077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12848343 + ... + 12848348.

It is an arithmetic number, because the mean of its divisors is an integer number (25696692).

Almost surely, 2^77090073 is an apocalyptic number.

It is an amenable number.

77090073 is a deficient number, since it is larger than the sum of its proper divisors (25696695).

77090073 is a wasteful number, since it uses less digits than its factorization.

77090073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25696694.

The product of its (nonzero) digits is 9261, while the sum is 33.

The square root of 77090073 is about 8780.0952728316. The cubic root of 77090073 is about 425.5979090746.

The spelling of 77090073 in words is "seventy-seven million, ninety thousand, seventy-three".