121648766 has 4 divisors (see below), whose sum is σ = 182473152. Its totient is φ = 60824382.

The previous prime is 121648759. The next prime is 121648777. The reversal of 121648766 is 667846121.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30412190 + ... + 30412193.

It is an arithmetic number, because the mean of its divisors is an integer number (45618288).

Almost surely, 2^121648766 is an apocalyptic number.

121648766 is a deficient number, since it is larger than the sum of its proper divisors (60824386).

121648766 is an equidigital number, since it uses as much as digits as its factorization.

121648766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60824385.

The product of its digits is 96768, while the sum is 41.

The square root of 121648766 is about 11029.4499409535. The cubic root of 121648766 is about 495.4911507755.

The spelling of 121648766 in words is "one hundred twenty-one million, six hundred forty-eight thousand, seven hundred sixty-six".