84745131 has 8 divisors (see below), whose sum is σ = 115621440. Its totient is φ = 55182792.

The previous prime is 84745123. The next prime is 84745147. The reversal of 84745131 is 13154748.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84745131 - 2³ = 84745123 is a prime.

It is a super-2 number, since 2×84745131² = 14363474456414322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84745092 and 84745101.

It is not an unprimeable number, because it can be changed into a prime (84745631) 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, 328341 + ... + 328598.

It is an arithmetic number, because the mean of its divisors is an integer number (14452680).

Almost surely, 2^84745131 is an apocalyptic number.

84745131 is a deficient number, since it is larger than the sum of its proper divisors (30876309).

84745131 is a wasteful number, since it uses less digits than its factorization.

84745131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656985.

The product of its digits is 13440, while the sum is 33.

The square root of 84745131 is about 9205.7118681827. The cubic root of 84745131 is about 439.2430701605.

Adding to 84745131 its reverse (13154748), we get a palindrome (97899879).

The spelling of 84745131 in words is "eighty-four million, seven hundred forty-five thousand, one hundred thirty-one".