84145007 has 4 divisors (see below), whose sum is σ = 84269976. Its totient is φ = 84020040.

The previous prime is 84144959. The next prime is 84145013. The reversal of 84145007 is 70054148.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84145007 - 2²⁴ = 67367791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84145027) 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, 61469 + ... + 62822.

It is an arithmetic number, because the mean of its divisors is an integer number (21067494).

Almost surely, 2^84145007 is an apocalyptic number.

84145007 is a deficient number, since it is larger than the sum of its proper divisors (124969).

84145007 is a wasteful number, since it uses less digits than its factorization.

84145007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124968.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 84145007 is about 9173.0587592144. The cubic root of 84145007 is about 438.2037774222.

The spelling of 84145007 in words is "eighty-four million, one hundred forty-five thousand, seven".