80615477 has 2 divisors, whose sum is σ = 80615478. Its totient is φ = 80615476.

The previous prime is 80615467. The next prime is 80615501. The reversal of 80615477 is 77451608.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51466276 + 29149201 = 7174^2 + 5399^2 .

It is a cyclic number.

It is not a de Polignac number, because 80615477 - 2¹⁴ = 80599093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80615477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80615467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40307738 + 40307739.

It is an arithmetic number, because the mean of its divisors is an integer number (40307739).

Almost surely, 2^80615477 is an apocalyptic number.

It is an amenable number.

80615477 is a deficient number, since it is larger than the sum of its proper divisors (1).

80615477 is an equidigital number, since it uses as much as digits as its factorization.

80615477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 80615477 is about 8978.6121978845. The cubic root of 80615477 is about 431.9891204536.

The spelling of 80615477 in words is "eighty million, six hundred fifteen thousand, four hundred seventy-seven".