84540137 has 4 divisors (see below), whose sum is σ = 92225616. Its totient is φ = 76854660.

The previous prime is 84540091. The next prime is 84540143. The reversal of 84540137 is 73104548.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84540137 - 2¹² = 84536041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84540187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3842723 + ... + 3842744.

It is an arithmetic number, because the mean of its divisors is an integer number (23056404).

Almost surely, 2^84540137 is an apocalyptic number.

It is an amenable number.

84540137 is a deficient number, since it is larger than the sum of its proper divisors (7685479).

84540137 is a wasteful number, since it uses less digits than its factorization.

84540137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7685478.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 84540137 is about 9194.5710612296. The cubic root of 84540137 is about 438.8886156016. Note that the first 3 decimals are identical.

The spelling of 84540137 in words is "eighty-four million, five hundred forty thousand, one hundred thirty-seven".