101764621 has 6 divisors (see below), whose sum is σ = 118379310. Its totient is φ = 87226776.

The previous prime is 101764613. The next prime is 101764633. The reversal of 101764621 is 126467101.

It can be written as a sum of positive squares in only one way, i.e., 70795396 + 30969225 = 8414^2 + 5565^2 .

It is not a de Polignac number, because 101764621 - 2³ = 101764613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101764621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101764651) 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 5 ways as a sum of consecutive naturals, for example, 1038366 + ... + 1038463.

It is an arithmetic number, because the mean of its divisors is an integer number (19729885).

Almost surely, 2^101764621 is an apocalyptic number.

It is an amenable number.

101764621 is a deficient number, since it is larger than the sum of its proper divisors (16614689).

101764621 is an equidigital number, since it uses as much as digits as its factorization.

101764621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2076843 (or 2076836 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 101764621 is about 10087.8452109457. The cubic root of 101764621 is about 466.8731946966.

The spelling of 101764621 in words is "one hundred one million, seven hundred sixty-four thousand, six hundred twenty-one".