61145070 has 32 divisors (see below), whose sum is σ = 167712768. Its totient is φ = 13975968.

The previous prime is 61145069. The next prime is 61145083. The reversal of 61145070 is 7054116.

It is a self number, because there is not a number n which added to its sum of digits gives 61145070.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145374 + ... + 145793.

It is an arithmetic number, because the mean of its divisors is an integer number (5241024).

Almost surely, 2^61145070 is an apocalyptic number.

61145070 is an abundant number, since it is smaller than the sum of its proper divisors (106567698).

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

61145070 is a wasteful number, since it uses less digits than its factorization.

61145070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291184.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 61145070 is about 7819.5313158782. The cubic root of 61145070 is about 393.9615300806.

Adding to 61145070 its reverse (7054116), we get a palindrome (68199186).

The spelling of 61145070 in words is "sixty-one million, one hundred forty-five thousand, seventy".