106491870 has 48 divisors (see below), whose sum is σ = 278141760. Its totient is φ = 28268352.

The previous prime is 106491839. The next prime is 106491887. The reversal of 106491870 is 78194601.

106491870 is a `hidden beast` number, since 1 + 0 + 649 + 1 + 8 + 7 + 0 = 666.

It is a super-2 number, since 2×106491870² = 22681036752193800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18027 + ... + 23193.

It is an arithmetic number, because the mean of its divisors is an integer number (5794620).

Almost surely, 2^106491870 is an apocalyptic number.

106491870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 106491870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139070880).

106491870 is an abundant number, since it is smaller than the sum of its proper divisors (171649890).

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

106491870 is a wasteful number, since it uses less digits than its factorization.

106491870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5409 (or 5406 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 106491870 is about 10319.4898129704. The cubic root of 106491870 is about 473.9932435078.

The spelling of 106491870 in words is "one hundred six million, four hundred ninety-one thousand, eight hundred seventy".