7212699648 has 624 divisors, whose sum is σ = 27340902720. Its totient is φ = 1873428480.

The previous prime is 7212699647. The next prime is 7212699677. The reversal of 7212699648 is 8469962127.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 7212699594 and 7212699603.

It is not an unprimeable number, because it can be changed into a prime (7212699647) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 655699963 + ... + 655699973.

Almost surely, 2^7212699648 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 7212699648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13670451360).

7212699648 is an abundant number, since it is smaller than the sum of its proper divisors (20128203072).

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

7212699648 is an equidigital number, since it uses as much as digits as its factorization.

7212699648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 23 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 7212699648 is about 84927.6141664182. The cubic root of 7212699648 is about 1932.1134148921.

The spelling of 7212699648 in words is "seven billion, two hundred twelve million, six hundred ninety-nine thousand, six hundred forty-eight".