61604160 has 56 divisors (see below), whose sum is σ = 195596256. Its totient is φ = 16427520.

The previous prime is 61604119. The next prime is 61604171. The reversal of 61604160 is 6140616.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 61604160.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31126 + ... + 33045.

Almost surely, 2^61604160 is an apocalyptic number.

61604160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61604160 is an abundant number, since it is smaller than the sum of its proper divisors (133992096).

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

61604160 is a wasteful number, since it uses less digits than its factorization.

61604160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64191 (or 64181 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 61604160 is about 7848.8317602048. The cubic root of 61604160 is about 394.9450545803.

Adding to 61604160 its reverse (6140616), we get a palindrome (67744776).

The spelling of 61604160 in words is "sixty-one million, six hundred four thousand, one hundred sixty".