61213469 has 4 divisors (see below), whose sum is σ = 61289760. Its totient is φ = 61137180.

The previous prime is 61213457. The next prime is 61213483. The reversal of 61213469 is 96431216.

61213469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-61213469 is a prime.

It is a super-2 number, since 2×61213469² = 7494177574027922, 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 (61213409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36929 + ... + 38550.

It is an arithmetic number, because the mean of its divisors is an integer number (15322440).

Almost surely, 2^61213469 is an apocalyptic number.

It is an amenable number.

61213469 is a deficient number, since it is larger than the sum of its proper divisors (76291).

61213469 is an equidigital number, since it uses as much as digits as its factorization.

61213469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76290.

The product of its digits is 7776, while the sum is 32.

The square root of 61213469 is about 7823.9036931701. The cubic root of 61213469 is about 394.1083750246.

The spelling of 61213469 in words is "sixty-one million, two hundred thirteen thousand, four hundred sixty-nine".