101880649 has 8 divisors (see below), whose sum is σ = 110158272. Its totient is φ = 93666000.

The previous prime is 101880587. The next prime is 101880659. The reversal of 101880649 is 946088101.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 101880649 - 2¹⁵ = 101847881 is a prime.

It is a super-2 number, since 2×101880649² = 20759333281322402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101880659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12349 + ... + 18874.

It is an arithmetic number, because the mean of its divisors is an integer number (13769784).

Almost surely, 2^101880649 is an apocalyptic number.

It is an amenable number.

101880649 is a deficient number, since it is larger than the sum of its proper divisors (8277623).

101880649 is a wasteful number, since it uses less digits than its factorization.

101880649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31487.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 101880649 is about 10093.5944539099. The cubic root of 101880649 is about 467.0505640937.

The spelling of 101880649 in words is "one hundred one million, eight hundred eighty thousand, six hundred forty-nine".