61388960 has 24 divisors (see below), whose sum is σ = 145031796. Its totient is φ = 24555520.

The previous prime is 61388953. The next prime is 61388983. The reversal of 61388960 is 6988316.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 58553104 + 2835856 = 7652^2 + 1684^2 .

It is an unprimeable number.

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, 191681 + ... + 192000.

Almost surely, 2^61388960 is an apocalyptic number.

It is an amenable number.

61388960 is an abundant number, since it is smaller than the sum of its proper divisors (83642836).

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

61388960 is a wasteful number, since it uses less digits than its factorization.

61388960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383696 (or 383688 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 61388960 is about 7835.1107203408. The cubic root of 61388960 is about 394.4846347258.

The spelling of 61388960 in words is "sixty-one million, three hundred eighty-eight thousand, nine hundred sixty".