662612420 has 24 divisors (see below), whose sum is σ = 1395888984. Its totient is φ = 264206336.

The previous prime is 662612393. The next prime is 662612437. The reversal of 662612420 is 24216266.

It can be written as a sum of positive squares in 4 ways, for example, as 21104836 + 641507584 = 4594^2 + 25328^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45917 + ... + 58596.

It is an arithmetic number, because the mean of its divisors is an integer number (58162041).

Almost surely, 2^662612420 is an apocalyptic number.

It is an amenable number.

662612420 is an abundant number, since it is smaller than the sum of its proper divisors (733276564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

662612420 is a wasteful number, since it uses less digits than its factorization.

662612420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104839 (or 104837 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 662612420 is about 25741.2590989641. The cubic root of 662612420 is about 871.8060074730.

Adding to 662612420 its reverse (24216266), we get a palindrome (686828686).

The spelling of 662612420 in words is "six hundred sixty-two million, six hundred twelve thousand, four hundred twenty".