86721423 has 8 divisors (see below), whose sum is σ = 115824000. Its totient is φ = 57716568.

The previous prime is 86721413. The next prime is 86721461. The reversal of 86721423 is 32412768.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86721423 - 2¹⁷ = 86590351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86721413) 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, 22333 + ... + 25926.

It is an arithmetic number, because the mean of its divisors is an integer number (14478000).

Almost surely, 2^86721423 is an apocalyptic number.

86721423 is a deficient number, since it is larger than the sum of its proper divisors (29102577).

86721423 is a wasteful number, since it uses less digits than its factorization.

86721423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48861.

The product of its digits is 16128, while the sum is 33.

The square root of 86721423 is about 9312.4337849995. The cubic root of 86721423 is about 442.6313108975.

The spelling of 86721423 in words is "eighty-six million, seven hundred twenty-one thousand, four hundred twenty-three".