621621246 has 8 divisors (see below), whose sum is σ = 1243242504. Its totient is φ = 207207080.

The previous prime is 621621199. The next prime is 621621257. The reversal of 621621246 is 642126126.

It is a sphenic number, since it is the product of 3 distinct primes.

621621246 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51801765 + ... + 51801776.

It is an arithmetic number, because the mean of its divisors is an integer number (155405313).

Almost surely, 2^621621246 is an apocalyptic number.

621621246 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

621621246 is a wasteful number, since it uses less digits than its factorization.

621621246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103603546.

The product of its digits is 6912, while the sum is 30.

The square root of 621621246 is about 24932.3333444746. Note that the first 4 decimals coincide. The cubic root of 621621246 is about 853.4444984911. Note that the first 4 decimals are identical.

The spelling of 621621246 in words is "six hundred twenty-one million, six hundred twenty-one thousand, two hundred forty-six".