86617830 has 64 divisors (see below), whose sum is σ = 229376448. Its totient is φ = 20797440.

The previous prime is 86617829. The next prime is 86617837. The reversal of 86617830 is 3871668.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86617837) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13282 + ... + 18698.

It is an arithmetic number, because the mean of its divisors is an integer number (3584007).

Almost surely, 2^86617830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86617830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114688224).

86617830 is an abundant number, since it is smaller than the sum of its proper divisors (142758618).

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

86617830 is a wasteful number, since it uses less digits than its factorization.

86617830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5481.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 86617830 is about 9306.8700431455. The cubic root of 86617830 is about 442.4549923900.

The spelling of 86617830 in words is "eighty-six million, six hundred seventeen thousand, eight hundred thirty".