756461 has 4 divisors (see below), whose sum is σ = 768924. Its totient is φ = 744000.

The previous prime is 756443. The next prime is 756463. The reversal of 756461 is 164657.

756461 = T₁₂₆ + T₁₂₇ + ... + T₁₈₆.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 164657 = 23 ⋅7159.

It can be written as a sum of positive squares in 2 ways, for example, as 126025 + 630436 = 355^2 + 794^2 .

It is a cyclic number.

It is not a de Polignac number, because 756461 - 2¹⁰ = 755437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (756463) 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, 6140 + ... + 6261.

It is an arithmetic number, because the mean of its divisors is an integer number (192231).

2⁷⁵⁶⁴⁶¹ is an apocalyptic number.

It is an amenable number.

756461 is a deficient number, since it is larger than the sum of its proper divisors (12463).

756461 is a wasteful number, since it uses less digits than its factorization.

756461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12462.

The product of its digits is 5040, while the sum is 29.

The square root of 756461 is about 869.7476645556. The cubic root of 756461 is about 91.1161821599.

The spelling of 756461 in words is "seven hundred fifty-six thousand, four hundred sixty-one".