61604643 has 8 divisors (see below), whose sum is σ = 83062800. Its totient is φ = 40608128.

The previous prime is 61604633. The next prime is 61604659. The reversal of 61604643 is 34640616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61604643 - 2⁶ = 61604579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61604643.

It is not an unprimeable number, because it can be changed into a prime (61604633) 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 7 ways as a sum of consecutive naturals, for example, 115098 + ... + 115631.

It is an arithmetic number, because the mean of its divisors is an integer number (10382850).

Almost surely, 2^61604643 is an apocalyptic number.

61604643 is a deficient number, since it is larger than the sum of its proper divisors (21458157).

61604643 is a wasteful number, since it uses less digits than its factorization.

61604643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230821.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 61604643 is about 7848.8625290548. The cubic root of 61604643 is about 394.9460867506.

The spelling of 61604643 in words is "sixty-one million, six hundred four thousand, six hundred forty-three".