76820423 has 2 divisors, whose sum is σ = 76820424. Its totient is φ = 76820422.

The previous prime is 76820413. The next prime is 76820441. The reversal of 76820423 is 32402867.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 76820423 - 2⁴ = 76820407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76820423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76820413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38410211 + 38410212.

It is an arithmetic number, because the mean of its divisors is an integer number (38410212).

Almost surely, 2^76820423 is an apocalyptic number.

76820423 is a deficient number, since it is larger than the sum of its proper divisors (1).

76820423 is an equidigital number, since it uses as much as digits as its factorization.

76820423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 76820423 is about 8764.7260653143. The cubic root of 76820423 is about 425.1011025906.

The spelling of 76820423 in words is "seventy-six million, eight hundred twenty thousand, four hundred twenty-three".