660121414 has 4 divisors (see below), whose sum is σ = 990182124. Its totient is φ = 330060706.

The previous prime is 660121381. The next prime is 660121421. The reversal of 660121414 is 414121066.

660121414 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 414121066 = 2 ⋅207060533.

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, 165030352 + ... + 165030355.

It is an arithmetic number, because the mean of its divisors is an integer number (247545531).

Almost surely, 2^660121414 is an apocalyptic number.

660121414 is a deficient number, since it is larger than the sum of its proper divisors (330060710).

660121414 is a wasteful number, since it uses less digits than its factorization.

660121414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330060709.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 660121414 is about 25692.8280654349. The cubic root of 660121414 is about 870.7121548155.

The spelling of 660121414 in words is "six hundred sixty million, one hundred twenty-one thousand, four hundred fourteen".