61614945 has 64 divisors (see below), whose sum is σ = 126512640. Its totient is φ = 27869184.

The previous prime is 61614913. The next prime is 61614983. The reversal of 61614945 is 54941616.

61614945 is a `hidden beast` number, since 6 + 161 + 494 + 5 = 666.

61614945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61614945 - 2⁵ = 61614913 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 106497 + ... + 107073.

It is an arithmetic number, because the mean of its divisors is an integer number (1976760).

Almost surely, 2^61614945 is an apocalyptic number.

It is an amenable number.

61614945 is an abundant number, since it is smaller than the sum of its proper divisors (64897695).

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

61614945 is a wasteful number, since it uses less digits than its factorization.

61614945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711 (or 705 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 61614945 is about 7849.5187750588. The cubic root of 61614945 is about 394.9681008262.

The spelling of 61614945 in words is "sixty-one million, six hundred fourteen thousand, nine hundred forty-five".