80100785 has 4 divisors (see below), whose sum is σ = 96120948. Its totient is φ = 64080624.

The previous prime is 80100767. The next prime is 80100793. The reversal of 80100785 is 58700108.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59706529 + 20394256 = 7727^2 + 4516^2 .

It is a cyclic number.

It is not a de Polignac number, because 80100785 - 2¹⁸ = 79838641 is a prime.

It is a super-2 number, since 2×80100785² = 12832271515232450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8010074 + ... + 8010083.

It is an arithmetic number, because the mean of its divisors is an integer number (24030237).

Almost surely, 2^80100785 is an apocalyptic number.

It is an amenable number.

80100785 is a deficient number, since it is larger than the sum of its proper divisors (16020163).

80100785 is a wasteful number, since it uses less digits than its factorization.

80100785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16020162.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 80100785 is about 8949.9041894313. The cubic root of 80100785 is about 431.0678076572.

The spelling of 80100785 in words is "eighty million, one hundred thousand, seven hundred eighty-five".