741642561 has 96 divisors (see below), whose sum is σ = 1352332800. Its totient is φ = 400308480.

The previous prime is 741642547. The next prime is 741642593. The reversal of 741642561 is 165246147.

741642561 is a `hidden beast` number, since 7 + 4 + 1 + 642 + 5 + 6 + 1 = 666.

It is not a de Polignac number, because 741642561 - 2⁵ = 741642529 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (741642511) 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 95 ways as a sum of consecutive naturals, for example, 862950 + ... + 863808.

It is an arithmetic number, because the mean of its divisors is an integer number (14086800).

Almost surely, 2^741642561 is an apocalyptic number.

It is an amenable number.

741642561 is a deficient number, since it is larger than the sum of its proper divisors (610690239).

741642561 is a wasteful number, since it uses less digits than its factorization.

741642561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 909 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 741642561 is about 27233.1151541648. The cubic root of 741642561 is about 905.1729108071.

The spelling of 741642561 in words is "seven hundred forty-one million, six hundred forty-two thousand, five hundred sixty-one".