80404566 has 16 divisors (see below), whose sum is σ = 175428288. Its totient is φ = 24365000.

The previous prime is 80404553. The next prime is 80404579. The reversal of 80404566 is 66540408.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (80404553) and next prime (80404579).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609060 + ... + 609191.

It is an arithmetic number, because the mean of its divisors is an integer number (10964268).

Almost surely, 2^80404566 is an apocalyptic number.

80404566 is an abundant number, since it is smaller than the sum of its proper divisors (95023722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80404566 is a wasteful number, since it uses less digits than its factorization.

80404566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218267.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 80404566 is about 8966.8593163939. The cubic root of 80404566 is about 431.6120595659.

The spelling of 80404566 in words is "eighty million, four hundred four thousand, five hundred sixty-six".