101640955 has 8 divisors (see below), whose sum is σ = 131351472. Its totient is φ = 75057888.

The previous prime is 101640953. The next prime is 101640967. The reversal of 101640955 is 559046101.

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 101640955 - 2¹ = 101640953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101640953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 781789 + ... + 781918.

It is an arithmetic number, because the mean of its divisors is an integer number (16418934).

Almost surely, 2^101640955 is an apocalyptic number.

101640955 is a deficient number, since it is larger than the sum of its proper divisors (29710517).

101640955 is a wasteful number, since it uses less digits than its factorization.

101640955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563725.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 101640955 is about 10081.7138919928. The cubic root of 101640955 is about 466.6840007734.

The spelling of 101640955 in words is "one hundred one million, six hundred forty thousand, nine hundred fifty-five".