80747677 has 2 divisors, whose sum is σ = 80747678. Its totient is φ = 80747676.

The previous prime is 80747669. The next prime is 80747699. The reversal of 80747677 is 77674708.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68989636 + 11758041 = 8306^2 + 3429^2 .

It is a cyclic number.

It is not a de Polignac number, because 80747677 - 2³ = 80747669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80747617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40373838 + 40373839.

It is an arithmetic number, because the mean of its divisors is an integer number (40373839).

Almost surely, 2^80747677 is an apocalyptic number.

It is an amenable number.

80747677 is a deficient number, since it is larger than the sum of its proper divisors (1).

80747677 is an equidigital number, since it uses as much as digits as its factorization.

80747677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 460992, while the sum is 46.

The square root of 80747677 is about 8985.9711216985. The cubic root of 80747677 is about 432.2251287856.

It can be divided in two parts, 8074 and 7677, that added together give a palindrome (15751).

The spelling of 80747677 in words is "eighty million, seven hundred forty-seven thousand, six hundred seventy-seven".