2761025861 has 4 divisors (see below), whose sum is σ = 3012028224. Its totient is φ = 2510023500.

The previous prime is 2761025849. The next prime is 2761025873. The reversal of 2761025861 is 1685201672.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2761025849) and next prime (2761025873).

It is a cyclic number.

It is not a de Polignac number, because 2761025861 - 2⁶ = 2761025797 is a prime.

It is a super-2 number, since 2×2761025861² = 15246527610221582642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2761025821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125501165 + ... + 125501186.

It is an arithmetic number, because the mean of its divisors is an integer number (753007056).

Almost surely, 2^2761025861 is an apocalyptic number.

It is an amenable number.

2761025861 is a deficient number, since it is larger than the sum of its proper divisors (251002363).

2761025861 is a wasteful number, since it uses less digits than its factorization.

2761025861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251002362.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 2761025861 is about 52545.4647043872. The cubic root of 2761025861 is about 1402.8895864103.

The spelling of 2761025861 in words is "two billion, seven hundred sixty-one million, twenty-five thousand, eight hundred sixty-one".