61610145 has 16 divisors (see below), whose sum is σ = 98755200. Its totient is φ = 32799104.

The previous prime is 61610111. The next prime is 61610147. The reversal of 61610145 is 54101616.

It is a cyclic number.

It is not a de Polignac number, because 61610145 - 2⁹ = 61609633 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (61610147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5557 + ... + 12413.

It is an arithmetic number, because the mean of its divisors is an integer number (6172200).

Almost surely, 2^61610145 is an apocalyptic number.

It is an amenable number.

61610145 is a deficient number, since it is larger than the sum of its proper divisors (37145055).

61610145 is a wasteful number, since it uses less digits than its factorization.

61610145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7464.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 61610145 is about 7849.2130178764. The cubic root of 61610145 is about 394.9578441365.

The spelling of 61610145 in words is "sixty-one million, six hundred ten thousand, one hundred forty-five".