61458816 has 32 divisors (see below), whose sum is σ = 163251000. Its totient is φ = 20486144.

The previous prime is 61458811. The next prime is 61458851. The reversal of 61458816 is 61885416.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61458811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79641 + ... + 80408.

Almost surely, 2^61458816 is an apocalyptic number.

It is an amenable number.

61458816 is an abundant number, since it is smaller than the sum of its proper divisors (101792184).

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

61458816 is a wasteful number, since it uses less digits than its factorization.

61458816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160066 (or 160054 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 61458816 is about 7839.5673350001. The cubic root of 61458816 is about 394.6342092454.

The spelling of 61458816 in words is "sixty-one million, four hundred fifty-eight thousand, eight hundred sixteen".