621479512 has 32 divisors (see below), whose sum is σ = 1268910000. Its totient is φ = 284231808.

The previous prime is 621479503. The next prime is 621479513. The reversal of 621479512 is 215974126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621479513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66087 + ... + 74902.

Almost surely, 2^621479512 is an apocalyptic number.

It is an amenable number.

621479512 is an abundant number, since it is smaller than the sum of its proper divisors (647430488).

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

621479512 is a wasteful number, since it uses less digits than its factorization.

621479512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141043 (or 141039 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 621479512 is about 24929.4908090799. The cubic root of 621479512 is about 853.3796297853.

The spelling of 621479512 in words is "six hundred twenty-one million, four hundred seventy-nine thousand, five hundred twelve".