80220465 has 48 divisors (see below), whose sum is σ = 150630480. Its totient is φ = 39260160.

The previous prime is 80220463. The next prime is 80220479. The reversal of 80220465 is 56402208.

80220465 = 143² + 144² + ... + 624².

It can be written as a sum of positive squares in 8 ways, for example, as 7834401 + 72386064 = 2799^2 + 8508^2 .

It is not a de Polignac number, because 80220465 - 2¹ = 80220463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80220463) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140701 + ... + 141269.

It is an arithmetic number, because the mean of its divisors is an integer number (3138135).

Almost surely, 2^80220465 is an apocalyptic number.

It is an amenable number.

80220465 is a deficient number, since it is larger than the sum of its proper divisors (70410015).

80220465 is a wasteful number, since it uses less digits than its factorization.

80220465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834 (or 831 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 80220465 is about 8956.5877989333. The cubic root of 80220465 is about 431.2823895018.

The spelling of 80220465 in words is "eighty million, two hundred twenty thousand, four hundred sixty-five".