70261 has 4 divisors (see below), whose sum is σ = 74412. Its totient is φ = 66112.

The previous prime is 70249. The next prime is 70271. The reversal of 70261 is 16207.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16207 = 19 ⋅853.

It can be written as a sum of positive squares in 2 ways, for example, as 53361 + 16900 = 231^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 70261 - 2⁵ = 70229 is a prime.

It is a Duffinian number.

70261 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70201) 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, 2050 + ... + 2083.

It is an arithmetic number, because the mean of its divisors is an integer number (18603).

2⁷⁰²⁶¹ is an apocalyptic number.

It is an amenable number.

70261 is a deficient number, since it is larger than the sum of its proper divisors (4151).

70261 is a wasteful number, since it uses less digits than its factorization.

70261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4150.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 70261 is about 265.0679158254. The cubic root of 70261 is about 41.2640111571.

Adding to 70261 its reverse (16207), we get a palindrome (86468).

The spelling of 70261 in words is "seventy thousand, two hundred sixty-one".