1662624420 has 48 divisors (see below), whose sum is σ = 4658418240. Its totient is φ = 443074176.

The previous prime is 1662624413. The next prime is 1662624427. The reversal of 1662624420 is 244262661.

It is an interprime number because it is at equal distance from previous prime (1662624413) and next prime (1662624427).

It is not an unprimeable number, because it can be changed into a prime (1662624427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91839 + ... + 108441.

It is an arithmetic number, because the mean of its divisors is an integer number (97050380).

Almost surely, 2^1662624420 is an apocalyptic number.

1662624420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1662624420 is an abundant number, since it is smaller than the sum of its proper divisors (2995793820).

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

1662624420 is a wasteful number, since it uses less digits than its factorization.

1662624420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18284 (or 18282 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 1662624420 is about 40775.2917831375. The cubic root of 1662624420 is about 1184.6718028603.

The spelling of 1662624420 in words is "one billion, six hundred sixty-two million, six hundred twenty-four thousand, four hundred twenty".