61308469 has 4 divisors (see below), whose sum is σ = 61362796. Its totient is φ = 61254144.

The previous prime is 61308463. The next prime is 61308479. The reversal of 61308469 is 96480316.

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 42732369 + 18576100 = 6537^2 + 4310^2 .

It is a cyclic number.

It is not a de Polignac number, because 61308469 - 2³ = 61308461 is a prime.

It is a super-2 number, since 2×61308469² = 7517456742247922, 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 (61308461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25434 + ... + 27739.

It is an arithmetic number, because the mean of its divisors is an integer number (15340699).

Almost surely, 2^61308469 is an apocalyptic number.

It is an amenable number.

61308469 is a deficient number, since it is larger than the sum of its proper divisors (54327).

61308469 is a wasteful number, since it uses less digits than its factorization.

61308469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54326.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 61308469 is about 7829.9724776017. The cubic root of 61308469 is about 394.3121479550.

The spelling of 61308469 in words is "sixty-one million, three hundred eight thousand, four hundred sixty-nine".