84780535 has 12 divisors (see below), whose sum is σ = 118347048. Its totient is φ = 58135056.

The previous prime is 84780491. The next prime is 84780539. The reversal of 84780535 is 53508748.

It is not a de Polignac number, because 84780535 - 2⁷ = 84780407 is a prime.

It is a super-2 number, since 2×84780535² = 14375478229772450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84780539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172777 + ... + 173266.

It is an arithmetic number, because the mean of its divisors is an integer number (9862254).

Almost surely, 2^84780535 is an apocalyptic number.

84780535 is a deficient number, since it is larger than the sum of its proper divisors (33566513).

84780535 is a wasteful number, since it uses less digits than its factorization.

84780535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346062 (or 346055 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 84780535 is about 9207.6346039577. The cubic root of 84780535 is about 439.3042292163.

The spelling of 84780535 in words is "eighty-four million, seven hundred eighty thousand, five hundred thirty-five".