2970861 has 4 divisors (see below), whose sum is σ = 3961152. Its totient is φ = 1980572.

The previous prime is 2970857. The next prime is 2970893. The reversal of 2970861 is 1680792.

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 a cyclic number.

It is not a de Polignac number, because 2970861 - 2² = 2970857 is a prime.

It is an Ulam number.

It is a D-number.

2970861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2970161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495141 + ... + 495146.

It is an arithmetic number, because the mean of its divisors is an integer number (990288).

2^2970861 is an apocalyptic number.

It is an amenable number.

2970861 is a deficient number, since it is larger than the sum of its proper divisors (990291).

2970861 is an equidigital number, since it uses as much as digits as its factorization.

2970861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990290.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 2970861 is about 1723.6185772960. The cubic root of 2970861 is about 143.7564846476.

The spelling of 2970861 in words is "two million, nine hundred seventy thousand, eight hundred sixty-one".