7534661 has 4 divisors (see below), whose sum is σ = 7545324. Its totient is φ = 7524000.

The previous prime is 7534649. The next prime is 7534673. The reversal of 7534661 is 1664357.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1664357 = 157 ⋅10601.

It is an interprime number because it is at equal distance from previous prime (7534649) and next prime (7534673).

It can be written as a sum of positive squares in 2 ways, for example, as 3204100 + 4330561 = 1790^2 + 2081^2 .

It is a cyclic number.

It is not a de Polignac number, because 7534661 - 2¹⁰ = 7533637 is a prime.

It is a super-2 number, since 2×7534661² = 113542232769842, 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 (7534601) 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, 4190 + ... + 5711.

It is an arithmetic number, because the mean of its divisors is an integer number (1886331).

Almost surely, 2^7534661 is an apocalyptic number.

It is an amenable number.

7534661 is a deficient number, since it is larger than the sum of its proper divisors (10663).

7534661 is an equidigital number, since it uses as much as digits as its factorization.

7534661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10662.

The product of its digits is 15120, while the sum is 32.

The square root of 7534661 is about 2744.9336968313. The cubic root of 7534661 is about 196.0444592328.

The spelling of 7534661 in words is "seven million, five hundred thirty-four thousand, six hundred sixty-one".