61269289 has 4 divisors (see below), whose sum is σ = 62183824. Its totient is φ = 60354756.

The previous prime is 61269287. The next prime is 61269331. The reversal of 61269289 is 98296216.

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.

It is a cyclic number.

It is not a de Polignac number, because 61269289 - 2¹ = 61269287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61269283) 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, 457167 + ... + 457300.

It is an arithmetic number, because the mean of its divisors is an integer number (15545956).

Almost surely, 2^61269289 is an apocalyptic number.

It is an amenable number.

61269289 is a deficient number, since it is larger than the sum of its proper divisors (914535).

61269289 is an equidigital number, since it uses as much as digits as its factorization.

61269289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914534.

The product of its digits is 93312, while the sum is 43.

The square root of 61269289 is about 7827.4701532487. The cubic root of 61269289 is about 394.2281332320.

The spelling of 61269289 in words is "sixty-one million, two hundred sixty-nine thousand, two hundred eighty-nine".