2672249861 has 2 divisors, whose sum is σ = 2672249862. Its totient is φ = 2672249860.

The previous prime is 2672249837. The next prime is 2672249897. The reversal of 2672249861 is 1689422762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2659361761 + 12888100 = 51569^2 + 3590^2 .

It is a cyclic number.

It is not a de Polignac number, because 2672249861 - 2¹⁴ = 2672233477 is a prime.

It is a super-2 number, since 2×2672249861² = 14281838639229038642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2672249761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1336124930 + 1336124931.

It is an arithmetic number, because the mean of its divisors is an integer number (1336124931).

Almost surely, 2^2672249861 is an apocalyptic number.

It is an amenable number.

2672249861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2672249861 is an equidigital number, since it uses as much as digits as its factorization.

2672249861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 47.

The square root of 2672249861 is about 51693.8087298663. The cubic root of 2672249861 is about 1387.6896667484.

The spelling of 2672249861 in words is "two billion, six hundred seventy-two million, two hundred forty-nine thousand, eight hundred sixty-one".