68631486 has 64 divisors (see below), whose sum is σ = 172454400. Its totient is φ = 17688960.

The previous prime is 68631481. The next prime is 68631491. The reversal of 68631486 is 68413686.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68631481) and next prime (68631491).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68631481) 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, 68340 + ... + 69336.

It is an arithmetic number, because the mean of its divisors is an integer number (2694600).

Almost surely, 2^68631486 is an apocalyptic number.

68631486 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 68631486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86227200).

68631486 is an abundant number, since it is smaller than the sum of its proper divisors (103822914).

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

68631486 is a wasteful number, since it uses less digits than its factorization.

With its successor (68631487) it forms an eRAP, since the sums of their prime factors are consecutive (1169 and 1170).

68631486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169.

The product of its digits is 165888, while the sum is 42.

The square root of 68631486 is about 8284.4122302068. The cubic root of 68631486 is about 409.4251034455.

The spelling of 68631486 in words is "sixty-eight million, six hundred thirty-one thousand, four hundred eighty-six".