86651004 has 72 divisors (see below), whose sum is σ = 225227520. Its totient is φ = 25905440.

The previous prime is 86650997. The next prime is 86651009. The reversal of 86651004 is 40015668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86651009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120157 + ... + 120875.

It is an arithmetic number, because the mean of its divisors is an integer number (3128160).

Almost surely, 2^86651004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86651004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112613760).

86651004 is an abundant number, since it is smaller than the sum of its proper divisors (138576516).

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

86651004 is a wasteful number, since it uses less digits than its factorization.

86651004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 86651004 is about 9308.6521043597. The cubic root of 86651004 is about 442.5114708635.

It can be divided in two parts, 8665 and 1004, that added together give a palindrome (9669).

The spelling of 86651004 in words is "eighty-six million, six hundred fifty-one thousand, four".