84730517 has 4 divisors (see below), whose sum is σ = 86329260. Its totient is φ = 83131776.

The previous prime is 84730507. The next prime is 84730531. The reversal of 84730517 is 71503748.

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

It can be written as a sum of positive squares in 2 ways, for example, as 65141041 + 19589476 = 8071^2 + 4426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84730517 is a prime.

It is a super-2 number, since 2×84730517² = 14358521022174578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84730507) 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, 799292 + ... + 799397.

It is an arithmetic number, because the mean of its divisors is an integer number (21582315).

Almost surely, 2^84730517 is an apocalyptic number.

It is an amenable number.

84730517 is a deficient number, since it is larger than the sum of its proper divisors (1598743).

84730517 is a wasteful number, since it uses less digits than its factorization.

84730517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598742.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 84730517 is about 9204.9180876312. The cubic root of 84730517 is about 439.2178200678.

The spelling of 84730517 in words is "eighty-four million, seven hundred thirty thousand, five hundred seventeen".