67614621696 has 540 divisors, whose sum is σ = 220562672148. Its totient is φ = 20639121408.

The previous prime is 67614621689. The next prime is 67614621707. The reversal of 67614621696 is 69612641676.

67614621696 is a `hidden beast` number, since 6 + 7 + 6 + 1 + 4 + 621 + 6 + 9 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 56865079296 + 10749542400 = 238464^2 + 103680^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1827422190 + ... + 1827422226.

Almost surely, 2^67614621696 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 67614621696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110281336074).

67614621696 is an abundant number, since it is smaller than the sum of its proper divisors (152948050452).

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

67614621696 is an frugal number, since it uses more digits than its factorization.

67614621696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 59 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The spelling of 67614621696 in words is "sixty-seven billion, six hundred fourteen million, six hundred twenty-one thousand, six hundred ninety-six".