84721763 has 4 divisors (see below), whose sum is σ = 96824880. Its totient is φ = 72618648.

The previous prime is 84721697. The next prime is 84721783. The reversal of 84721763 is 36712748.

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 84721763 - 2¹⁰ = 84720739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84721783) 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, 6051548 + ... + 6051561.

It is an arithmetic number, because the mean of its divisors is an integer number (24206220).

Almost surely, 2^84721763 is an apocalyptic number.

84721763 is a deficient number, since it is larger than the sum of its proper divisors (12103117).

84721763 is a wasteful number, since it uses less digits than its factorization.

84721763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12103116.

The product of its digits is 56448, while the sum is 38.

The square root of 84721763 is about 9204.4425686730. The cubic root of 84721763 is about 439.2026935020.

The spelling of 84721763 in words is "eighty-four million, seven hundred twenty-one thousand, seven hundred sixty-three".