86819742 has 16 divisors (see below), whose sum is σ = 192932880. Its totient is φ = 28939896.

The previous prime is 86819741. The next prime is 86819749. The reversal of 86819742 is 24791868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86819741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 803833 + ... + 803940.

It is an arithmetic number, because the mean of its divisors is an integer number (12058305).

Almost surely, 2^86819742 is an apocalyptic number.

86819742 is an abundant number, since it is smaller than the sum of its proper divisors (106113138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86819742 is a wasteful number, since it uses less digits than its factorization.

86819742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607784 (or 1607778 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 86819742 is about 9317.7111996455. The cubic root of 86819742 is about 442.7985230670.

The spelling of 86819742 in words is "eighty-six million, eight hundred nineteen thousand, seven hundred forty-two".