84091687207 has 4 divisors (see below), whose sum is σ = 91736386056. Its totient is φ = 76446988360.

The previous prime is 84091687177. The next prime is 84091687249. The reversal of 84091687207 is 70278619048.

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 84091687207 - 2¹¹ = 84091685159 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 (84091684207) 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, 3822349408 + ... + 3822349429.

It is an arithmetic number, because the mean of its divisors is an integer number (22934096514).

Almost surely, 2^84091687207 is an apocalyptic number.

84091687207 is a deficient number, since it is larger than the sum of its proper divisors (7644698849).

84091687207 is a wasteful number, since it uses less digits than its factorization.

84091687207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7644698848.

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 84091687207 in words is "eighty-four billion, ninety-one million, six hundred eighty-seven thousand, two hundred seven".