122487661 has 12 divisors (see below), whose sum is σ = 129808224. Its totient is φ = 115561800.

The previous prime is 122487647. The next prime is 122487679. The reversal of 122487661 is 166784221.

It is not a de Polignac number, because 122487661 - 2⁹ = 122487149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122487661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122487691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111726 + ... + 112816.

It is an arithmetic number, because the mean of its divisors is an integer number (10817352).

Almost surely, 2^122487661 is an apocalyptic number.

It is an amenable number.

122487661 is a deficient number, since it is larger than the sum of its proper divisors (7320563).

122487661 is a wasteful number, since it uses less digits than its factorization.

122487661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440 (or 1421 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 122487661 is about 11067.4143773512. The cubic root of 122487661 is about 496.6275185475.

The spelling of 122487661 in words is "one hundred twenty-two million, four hundred eighty-seven thousand, six hundred sixty-one".