61216269 has 12 divisors (see below), whose sum is σ = 86706624. Its totient is φ = 38409664.

The previous prime is 61216237. The next prime is 61216273. The reversal of 61216269 is 96261216.

It is not a de Polignac number, because 61216269 - 2⁵ = 61216237 is a prime.

It is a super-2 number, since 2×61216269² = 7494863180560722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61216279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34437 + ... + 36170.

It is an arithmetic number, because the mean of its divisors is an integer number (7225552).

Almost surely, 2^61216269 is an apocalyptic number.

It is an amenable number.

61216269 is a deficient number, since it is larger than the sum of its proper divisors (25490355).

61216269 is a wasteful number, since it uses less digits than its factorization.

61216269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70644 (or 70627 counting only the distinct ones).

The product of its digits is 7776, while the sum is 33.

The square root of 61216269 is about 7824.0826299318. The cubic root of 61216269 is about 394.1143839779.

The spelling of 61216269 in words is "sixty-one million, two hundred sixteen thousand, two hundred sixty-nine".