70056001620 has 864 divisors, whose sum is σ = 261750128640. Its totient is φ = 15088550400.

The previous prime is 70056001583. The next prime is 70056001643. The reversal of 70056001620 is 2610065007.

70056001620 is a `hidden beast` number, since 70 + 0 + 560 + 0 + 16 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 551621997 + ... + 551622123.

Almost surely, 2^70056001620 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 70056001620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130875064320).

70056001620 is an abundant number, since it is smaller than the sum of its proper divisors (191694127020).

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

70056001620 is a wasteful number, since it uses less digits than its factorization.

70056001620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

Adding to 70056001620 its reverse (2610065007), we get a palindrome (72666066627).

The spelling of 70056001620 in words is "seventy billion, fifty-six million, one thousand, six hundred twenty".