662662139 has 4 divisors (see below), whose sum is σ = 669095856. Its totient is φ = 656228424.

The previous prime is 662662129. The next prime is 662662163. The reversal of 662662139 is 931266266.

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

It is a cyclic number.

It is not a de Polignac number, because 662662139 - 2¹² = 662658043 is a prime.

It is a super-2 number, since 2×662662139² = 878242220928110642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 662662096 and 662662105.

It is not an unprimeable number, because it can be changed into a prime (662662129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3216704 + ... + 3216909.

It is an arithmetic number, because the mean of its divisors is an integer number (167273964).

Almost surely, 2^662662139 is an apocalyptic number.

662662139 is a deficient number, since it is larger than the sum of its proper divisors (6433717).

662662139 is a wasteful number, since it uses less digits than its factorization.

662662139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6433716.

The product of its digits is 139968, while the sum is 41.

The square root of 662662139 is about 25742.2248261490. The cubic root of 662662139 is about 871.8278121950.

The spelling of 662662139 in words is "six hundred sixty-two million, six hundred sixty-two thousand, one hundred thirty-nine".