61067520 has 360 divisors, whose sum is σ = 237431040. Its totient is φ = 14929920.

The previous prime is 61067509. The next prime is 61067521. The reversal of 61067520 is 2576016.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61067521) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1969905 + ... + 1969935.

Almost surely, 2^61067520 is an apocalyptic number.

61067520 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 61067520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118715520).

61067520 is an abundant number, since it is smaller than the sum of its proper divisors (176363520).

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

61067520 is a wasteful number, since it uses less digits than its factorization.

61067520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 61067520 is about 7814.5710054999. The cubic root of 61067520 is about 393.7949064429.

The spelling of 61067520 in words is "sixty-one million, sixty-seven thousand, five hundred twenty".