7499861 has 4 divisors (see below), whose sum is σ = 7741824. Its totient is φ = 7257900.

The previous prime is 7499819. The next prime is 7499867. The reversal of 7499861 is 1689947.

7499861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1689947 = 7 ⋅241421.

It is a cyclic number.

It is not a de Polignac number, because 7499861 - 2¹⁴ = 7483477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7499867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120935 + ... + 120996.

It is an arithmetic number, because the mean of its divisors is an integer number (1935456).

Almost surely, 2^7499861 is an apocalyptic number.

It is an amenable number.

7499861 is a deficient number, since it is larger than the sum of its proper divisors (241963).

7499861 is a wasteful number, since it uses less digits than its factorization.

7499861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241962.

The product of its digits is 108864, while the sum is 44.

The square root of 7499861 is about 2738.5874095964. The cubic root of 7499861 is about 195.7421727919.

The spelling of 7499861 in words is "seven million, four hundred ninety-nine thousand, eight hundred sixty-one".