7671861 has 16 divisors (see below), whose sum is σ = 11448000. Its totient is φ = 5077584.

The previous prime is 7671821. The next prime is 7671893. The reversal of 7671861 is 1681767.

It is a happy number.

7671861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7671861 - 2⁷ = 7671733 is a prime.

It is a super-3 number, since 3×7671861³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7671821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3070 + ... + 4976.

It is an arithmetic number, because the mean of its divisors is an integer number (715500).

Almost surely, 2^7671861 is an apocalyptic number.

It is an amenable number.

7671861 is a deficient number, since it is larger than the sum of its proper divisors (3776139).

7671861 is a wasteful number, since it uses less digits than its factorization.

7671861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065 (or 2059 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 7671861 is about 2769.8124485243. The cubic root of 7671861 is about 197.2272451306.

It can be divided in two parts, 767 and 1861, that added together give a triangular number (2628 = T₇₂).

The spelling of 7671861 in words is "seven million, six hundred seventy-one thousand, eight hundred sixty-one".