117621061 has 2 divisors, whose sum is σ = 117621062. Its totient is φ = 117621060.

The previous prime is 117621059. The next prime is 117621067. The reversal of 117621061 is 160126711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98128836 + 19492225 = 9906^2 + 4415^2 .

It is a cyclic number.

It is not a de Polignac number, because 117621061 - 2¹ = 117621059 is a prime.

Together with 117621059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117621067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58810530 + 58810531.

It is an arithmetic number, because the mean of its divisors is an integer number (58810531).

Almost surely, 2^117621061 is an apocalyptic number.

It is an amenable number.

117621061 is a deficient number, since it is larger than the sum of its proper divisors (1).

117621061 is an equidigital number, since it uses as much as digits as its factorization.

117621061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 117621061 is about 10845.3243842681. The cubic root of 117621061 is about 489.9612089242.

Adding to 117621061 its reverse (160126711), we get a palindrome (277747772).

The spelling of 117621061 in words is "one hundred seventeen million, six hundred twenty-one thousand, sixty-one".