61464560 has 40 divisors (see below), whose sum is σ = 144338976. Its totient is φ = 24339200.

The previous prime is 61464541. The next prime is 61464569. The reversal of 61464560 is 6546416.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61464569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4277 + ... + 11883.

Almost surely, 2^61464560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61464560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72169488).

61464560 is an abundant number, since it is smaller than the sum of its proper divisors (82874416).

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

61464560 is a wasteful number, since it uses less digits than its factorization.

61464560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7721 (or 7715 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 61464560 is about 7839.9336731888. The cubic root of 61464560 is about 394.6465031599.

The spelling of 61464560 in words is "sixty-one million, four hundred sixty-four thousand, five hundred sixty".