106620687961 has 4 divisors (see below), whose sum is σ = 110060065024. Its totient is φ = 103181310900.

The previous prime is 106620687959. The next prime is 106620688007. The reversal of 106620687961 is 169786026601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 169786026601 = 412051².

It is a cyclic number.

It is not a de Polignac number, because 106620687961 - 2¹ = 106620687959 is a prime.

It is a super-2 number, since 2×106620687961² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 106620687899 and 106620687908.

It is not an unprimeable number, because it can be changed into a prime (106620687661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1719688485 + ... + 1719688546.

It is an arithmetic number, because the mean of its divisors is an integer number (27515016256).

Almost surely, 2^106620687961 is an apocalyptic number.

It is an amenable number.

106620687961 is a deficient number, since it is larger than the sum of its proper divisors (3439377063).

106620687961 is an equidigital number, since it uses as much as digits as its factorization.

106620687961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3439377062.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 106620687961 in words is "one hundred six billion, six hundred twenty million, six hundred eighty-seven thousand, nine hundred sixty-one".