61069645 has 16 divisors (see below), whose sum is σ = 90195840. Its totient is φ = 38654784.

The previous prime is 61069643. The next prime is 61069651. The reversal of 61069645 is 54696016.

It is not a de Polignac number, because 61069645 - 2¹ = 61069643 is a prime.

It is a super-3 number, since 3×61069645³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61069643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66655 + ... + 67564.

It is an arithmetic number, because the mean of its divisors is an integer number (5637240).

Almost surely, 2^61069645 is an apocalyptic number.

61069645 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61069645 is a deficient number, since it is larger than the sum of its proper divisors (29126195).

61069645 is a wasteful number, since it uses less digits than its factorization.

61069645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134244.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 61069645 is about 7814.7069682746. The cubic root of 61069645 is about 393.7994740891.

It can be divided in two parts, 6106 and 9645, that added together give a palindrome (15751).

The spelling of 61069645 in words is "sixty-one million, sixty-nine thousand, six hundred forty-five".