61604700 has 144 divisors (see below), whose sum is σ = 188842080. Its totient is φ = 15482880.

The previous prime is 61604689. The next prime is 61604701. The reversal of 61604700 is 740616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61604701) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 635052 + ... + 635148.

Almost surely, 2^61604700 is an apocalyptic number.

61604700 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61604700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94421040).

61604700 is an abundant number, since it is smaller than the sum of its proper divisors (127237380).

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

61604700 is a wasteful number, since it uses less digits than its factorization.

61604700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 61604700 is about 7848.8661601533. The cubic root of 61604700 is about 394.9462085592.

The spelling of 61604700 in words is "sixty-one million, six hundred four thousand, seven hundred".