61504641 has 12 divisors (see below), whose sum is σ = 96916560. Its totient is φ = 37275480.

The previous prime is 61504637. The next prime is 61504649. The reversal of 61504641 is 14640516.

61504641 is a `hidden beast` number, since 6 + 15 + 0 + 4 + 641 = 666.

61504641 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 61504641 - 2² = 61504637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61504649) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 310531 + ... + 310728.

It is an arithmetic number, because the mean of its divisors is an integer number (8076380).

Almost surely, 2^61504641 is an apocalyptic number.

It is an amenable number.

61504641 is a deficient number, since it is larger than the sum of its proper divisors (35411919).

61504641 is a wasteful number, since it uses less digits than its factorization.

61504641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621276 (or 621273 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 61504641 is about 7842.4894644494. The cubic root of 61504641 is about 394.7322674305.

The spelling of 61504641 in words is "sixty-one million, five hundred four thousand, six hundred forty-one".