7612861 has 8 divisors (see below), whose sum is σ = 7949144. Its totient is φ = 7283520.

The previous prime is 7612859. The next prime is 7612873. The reversal of 7612861 is 1682167.

It can be written as a sum of positive squares in 4 ways, for example, as 2856100 + 4756761 = 1690^2 + 2181^2 .

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 7612861 - 2¹ = 7612859 is a prime.

It is a Duffinian number.

7612861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7612831) 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 7 ways as a sum of consecutive naturals, for example, 571 + ... + 3943.

It is an arithmetic number, because the mean of its divisors is an integer number (993643).

Almost surely, 2^7612861 is an apocalyptic number.

It is an amenable number.

7612861 is a deficient number, since it is larger than the sum of its proper divisors (336283).

7612861 is a wasteful number, since it uses less digits than its factorization.

7612861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471.

The product of its digits is 4032, while the sum is 31.

The square root of 7612861 is about 2759.1413519427. The cubic root of 7612861 is about 196.7203552868.

The spelling of 7612861 in words is "seven million, six hundred twelve thousand, eight hundred sixty-one".