61604445 has 64 divisors (see below), whose sum is σ = 117582336. Its totient is φ = 26956800.

The previous prime is 61604407. The next prime is 61604467. The reversal of 61604445 is 54440616.

It is not a de Polignac number, because 61604445 - 2⁷ = 61604317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 392307 + ... + 392463.

It is an arithmetic number, because the mean of its divisors is an integer number (1837224).

Almost surely, 2^61604445 is an apocalyptic number.

It is an amenable number.

61604445 is a deficient number, since it is larger than the sum of its proper divisors (55977891).

61604445 is a wasteful number, since it uses less digits than its factorization.

61604445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 61604445 is about 7848.8499157520. The cubic root of 61604445 is about 394.9456636255.

The spelling of 61604445 in words is "sixty-one million, six hundred four thousand, four hundred forty-five".