61233645 has 64 divisors (see below), whose sum is σ = 112803840. Its totient is φ = 28089600.

The previous prime is 61233629. The next prime is 61233647. The reversal of 61233645 is 54633216.

It is not a de Polignac number, because 61233645 - 2⁴ = 61233629 is a prime.

It is a super-3 number, since 3×61233645³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61233647) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 320500 + ... + 320690.

It is an arithmetic number, because the mean of its divisors is an integer number (1762560).

Almost surely, 2^61233645 is an apocalyptic number.

It is an amenable number.

61233645 is a deficient number, since it is larger than the sum of its proper divisors (51570195).

61233645 is a wasteful number, since it uses less digits than its factorization.

61233645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306.

The product of its digits is 12960, while the sum is 30.

The square root of 61233645 is about 7825.1929688666. The cubic root of 61233645 is about 394.1516697289.

The spelling of 61233645 in words is "sixty-one million, two hundred thirty-three thousand, six hundred forty-five".