70581461 has 4 divisors (see below), whose sum is σ = 70603500. Its totient is φ = 70559424.

The previous prime is 70581421. The next prime is 70581473. The reversal of 70581461 is 16418507.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16418507 = 7 ⋅2345501.

It can be written as a sum of positive squares in 2 ways, for example, as 35700625 + 34880836 = 5975^2 + 5906^2 .

It is a cyclic number.

It is not a de Polignac number, because 70581461 - 2¹⁸ = 70319317 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 (70581421) 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, 5186 + ... + 12963.

It is an arithmetic number, because the mean of its divisors is an integer number (17650875).

Almost surely, 2^70581461 is an apocalyptic number.

It is an amenable number.

70581461 is a deficient number, since it is larger than the sum of its proper divisors (22039).

70581461 is a wasteful number, since it uses less digits than its factorization.

70581461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22038.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 70581461 is about 8401.2773433568. The cubic root of 70581461 is about 413.2665118450.

Adding to 70581461 its reverse (16418507), we get a palindrome (86999968).

The spelling of 70581461 in words is "seventy million, five hundred eighty-one thousand, four hundred sixty-one".