61506470 has 16 divisors (see below), whose sum is σ = 111073248. Its totient is φ = 24522240.

The previous prime is 61506463. The next prime is 61506479. The reversal of 61506470 is 7460516.

61506470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61506479) 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 7 ways as a sum of consecutive naturals, for example, 6779 + ... + 12998.

It is an arithmetic number, because the mean of its divisors is an integer number (6942078).

Almost surely, 2^61506470 is an apocalyptic number.

61506470 is a deficient number, since it is larger than the sum of its proper divisors (49566778).

61506470 is a wasteful number, since it uses less digits than its factorization.

61506470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20095.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 61506470 is about 7842.6060719636. The cubic root of 61506470 is about 394.7361801876.

Adding to 61506470 its reverse (7460516), we get a palindrome (68966986).

The spelling of 61506470 in words is "sixty-one million, five hundred six thousand, four hundred seventy".