61213470 has 16 divisors (see below), whose sum is σ = 146912400. Its totient is φ = 16323584.

The previous prime is 61213457. The next prime is 61213483. The reversal of 61213470 is 7431216.

61213470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61213457) and next prime (61213483).

It is a self number, because there is not a number n which added to its sum of digits gives 61213470.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1020195 + ... + 1020254.

It is an arithmetic number, because the mean of its divisors is an integer number (9182025).

Almost surely, 2^61213470 is an apocalyptic number.

61213470 is an abundant number, since it is smaller than the sum of its proper divisors (85698930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61213470 is a wasteful number, since it uses less digits than its factorization.

61213470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040459.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 61213470 is about 7823.9037570768. The cubic root of 61213470 is about 394.1083771707.

Adding to 61213470 its reverse (7431216), we get a palindrome (68644686).

It can be divided in two parts, 6121 and 3470, that added together give a triangular number (9591 = T₁₃₈).

The spelling of 61213470 in words is "sixty-one million, two hundred thirteen thousand, four hundred seventy".