80020747 has 2 divisors, whose sum is σ = 80020748. Its totient is φ = 80020746.

The previous prime is 80020739. The next prime is 80020769. The reversal of 80020747 is 74702008.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80020747 - 2³ = 80020739 is a prime.

It is not a weakly prime, because it can be changed into another prime (80020727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40010373 + 40010374.

It is an arithmetic number, because the mean of its divisors is an integer number (40010374).

Almost surely, 2^80020747 is an apocalyptic number.

80020747 is a deficient number, since it is larger than the sum of its proper divisors (1).

80020747 is an equidigital number, since it uses as much as digits as its factorization.

80020747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 80020747 is about 8945.4316273727. The cubic root of 80020747 is about 430.9241831673.

The spelling of 80020747 in words is "eighty million, twenty thousand, seven hundred forty-seven".