84781107 has 8 divisors (see below), whose sum is σ = 125601680. Its totient is φ = 56520720.

The previous prime is 84781093. The next prime is 84781111. The reversal of 84781107 is 70118748.

It is not a de Polignac number, because 84781107 - 2²⁶ = 17672243 is a prime.

It is a super-2 number, since 2×84781107² = 14375672208290898, 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 (84781507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1569994 + ... + 1570047.

It is an arithmetic number, because the mean of its divisors is an integer number (15700210).

Almost surely, 2^84781107 is an apocalyptic number.

84781107 is a deficient number, since it is larger than the sum of its proper divisors (40820573).

84781107 is a wasteful number, since it uses less digits than its factorization.

84781107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3140050 (or 3140044 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The square root of 84781107 is about 9207.6656650858. The cubic root of 84781107 is about 439.3052171846.

The spelling of 84781107 in words is "eighty-four million, seven hundred eighty-one thousand, one hundred seven".