122687477 has 4 divisors (see below), whose sum is σ = 133840896. Its totient is φ = 111534060.

The previous prime is 122687459. The next prime is 122687489. The reversal of 122687477 is 774786221.

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: 774786221 = 11 ⋅70435111.

It is not a de Polignac number, because 122687477 - 2²⁰ = 121638901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122687407) 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, 5576693 + ... + 5576714.

It is an arithmetic number, because the mean of its divisors is an integer number (33460224).

Almost surely, 2^122687477 is an apocalyptic number.

It is an amenable number.

122687477 is a deficient number, since it is larger than the sum of its proper divisors (11153419).

122687477 is a wasteful number, since it uses less digits than its factorization.

122687477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11153418.

The product of its digits is 263424, while the sum is 44.

The square root of 122687477 is about 11076.4379201980. The cubic root of 122687477 is about 496.8974238631.

The spelling of 122687477 in words is "one hundred twenty-two million, six hundred eighty-seven thousand, four hundred seventy-seven".