7212866641 has 8 divisors (see below), whose sum is σ = 7744719744. Its totient is φ = 6692965440.

The previous prime is 7212866623. The next prime is 7212866663. The reversal of 7212866641 is 1466682127.

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

It is a cyclic number.

It is not a de Polignac number, because 7212866641 - 2²⁵ = 7179312209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7212866671) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2986725 + ... + 2989138.

It is an arithmetic number, because the mean of its divisors is an integer number (968089968).

Almost surely, 2^7212866641 is an apocalyptic number.

7212866641 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

7212866641 is a deficient number, since it is larger than the sum of its proper divisors (531853103).

7212866641 is a wasteful number, since it uses less digits than its factorization.

7212866641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5975951.

The product of its digits is 193536, while the sum is 43.

The square root of 7212866641 is about 84928.5973097401. The cubic root of 7212866641 is about 1932.1283259491.

The spelling of 7212866641 in words is "seven billion, two hundred twelve million, eight hundred sixty-six thousand, six hundred forty-one".