84654706381 has 6 divisors (see below), whose sum is σ = 98475882990. Its totient is φ = 72561176856.

The previous prime is 84654706379. The next prime is 84654706457. The reversal of 84654706381 is 18360745648.

It can be written as a sum of positive squares in only one way, i.e., 79936252900 + 4718453481 = 282730^2 + 68691^2 .

It is not a de Polignac number, because 84654706381 - 2¹ = 84654706379 is a prime.

It is a super-2 number, since 2×84654706381² (a number of 23 digits) 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 (84654706481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 863823486 + ... + 863823583.

It is an arithmetic number, because the mean of its divisors is an integer number (16412647165).

Almost surely, 2^84654706381 is an apocalyptic number.

It is an amenable number.

84654706381 is a deficient number, since it is larger than the sum of its proper divisors (13821176609).

84654706381 is a wasteful number, since it uses less digits than its factorization.

84654706381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727647083 (or 1727647076 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 84654706381 in words is "eighty-four billion, six hundred fifty-four million, seven hundred six thousand, three hundred eighty-one".