80485690 has 12 divisors (see below), whose sum is σ = 144925326. Its totient is φ = 32182928.

The previous prime is 80485687. The next prime is 80485697. The reversal of 80485690 is 9658408.

It can be written as a sum of positive squares in 3 ways, for example, as 19035769 + 61449921 = 4363^2 + 7839^2 .

It is a super-2 number, since 2×80485690² = 12955892589552200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80485697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26952 + ... + 29788.

Almost surely, 2^80485690 is an apocalyptic number.

80485690 is a deficient number, since it is larger than the sum of its proper divisors (64439636).

80485690 is an frugal number, since it uses more digits than its factorization.

80485690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5681 (or 2844 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 80485690 is about 8971.3817218977. The cubic root of 80485690 is about 431.7571687691.

Multiplying 80485690 by its sum of digits (40), we get a square (3219427600 = 56740²).

The spelling of 80485690 in words is "eighty million, four hundred eighty-five thousand, six hundred ninety".