86772381 has 8 divisors (see below), whose sum is σ = 115776960. Its totient is φ = 57808032.

The previous prime is 86772377. The next prime is 86772397. The reversal of 86772381 is 18327768.

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

It is not a de Polignac number, because 86772381 - 2² = 86772377 is a prime.

It is a super-2 number, since 2×86772381² = 15058892208818322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86772331) 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, 4600 + ... + 13953.

It is an arithmetic number, because the mean of its divisors is an integer number (14472120).

Almost surely, 2^86772381 is an apocalyptic number.

It is an amenable number.

86772381 is a deficient number, since it is larger than the sum of its proper divisors (29004579).

86772381 is a wasteful number, since it uses less digits than its factorization.

86772381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20115.

The product of its digits is 112896, while the sum is 42.

The square root of 86772381 is about 9315.1694026464. The cubic root of 86772381 is about 442.7179914779.

It can be divided in two parts, 86772 and 381, that added together give a triangular number (87153 = T₄₁₇).

The spelling of 86772381 in words is "eighty-six million, seven hundred seventy-two thousand, three hundred eighty-one".