662121662 has 4 divisors (see below), whose sum is σ = 993182496. Its totient is φ = 331060830.

The previous prime is 662121643. The next prime is 662121667. The reversal of 662121662 is 266121266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 266121266 = 2 ⋅133060633.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662121667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165530414 + ... + 165530417.

It is an arithmetic number, because the mean of its divisors is an integer number (248295624).

Almost surely, 2^662121662 is an apocalyptic number.

662121662 is a deficient number, since it is larger than the sum of its proper divisors (331060834).

662121662 is a wasteful number, since it uses less digits than its factorization.

662121662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331060833.

The product of its digits is 10368, while the sum is 32.

The square root of 662121662 is about 25731.7248158766. The cubic root of 662121662 is about 871.5907225242.

The spelling of 662121662 in words is "six hundred sixty-two million, one hundred twenty-one thousand, six hundred sixty-two".