84507645 has 16 divisors (see below), whose sum is σ = 138090240. Its totient is φ = 44111424.

The previous prime is 84507623. The next prime is 84507673. The reversal of 84507645 is 54670548.

It is not a de Polignac number, because 84507645 - 2⁵ = 84507613 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59230 + ... + 60639.

It is an arithmetic number, because the mean of its divisors is an integer number (8630640).

Almost surely, 2^84507645 is an apocalyptic number.

It is an amenable number.

84507645 is a deficient number, since it is larger than the sum of its proper divisors (53582595).

84507645 is a wasteful number, since it uses less digits than its factorization.

84507645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119924.

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 84507645 is about 9192.8039792003. The cubic root of 84507645 is about 438.8323811835.

The spelling of 84507645 in words is "eighty-four million, five hundred seven thousand, six hundred forty-five".