61112069 has 4 divisors (see below), whose sum is σ = 61128396. Its totient is φ = 61095744.

The previous prime is 61112047. The next prime is 61112071. The reversal of 61112069 is 96021116.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14025025 + 47087044 = 3745^2 + 6862^2 .

It is a cyclic number.

It is not a de Polignac number, because 61112069 - 2¹² = 61107973 is a prime.

It is a super-2 number, since 2×61112069² = 7469369954921522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61112089) 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, 557 + ... + 11069.

It is an arithmetic number, because the mean of its divisors is an integer number (15282099).

Almost surely, 2^61112069 is an apocalyptic number.

It is an amenable number.

61112069 is a deficient number, since it is larger than the sum of its proper divisors (16327).

61112069 is a wasteful number, since it uses less digits than its factorization.

61112069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16326.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 61112069 is about 7817.4208662448. The cubic root of 61112069 is about 393.8906414866.

The spelling of 61112069 in words is "sixty-one million, one hundred twelve thousand, sixty-nine".