6261620436 has 120 divisors (see below), whose sum is σ = 17074002176. Its totient is φ = 1998743040.

The previous prime is 6261620429. The next prime is 6261620503. The reversal of 6261620436 is 6340261626.

6261620436 is a `hidden beast` number, since 6 + 2 + 616 + 2 + 0 + 4 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 6261620436.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 971055 + ... + 977481.

Almost surely, 2^6261620436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6261620436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8537001088).

6261620436 is an abundant number, since it is smaller than the sum of its proper divisors (10812381740).

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

6261620436 is a wasteful number, since it uses less digits than its factorization.

6261620436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6571 (or 6560 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 6261620436 is about 79130.4014649237. The cubic root of 6261620436 is about 1843.1566439285.

The spelling of 6261620436 in words is "six billion, two hundred sixty-one million, six hundred twenty thousand, four hundred thirty-six".