61442648 has 16 divisors (see below), whose sum is σ = 119178000. Its totient is φ = 29661856.

The previous prime is 61442639. The next prime is 61442653. The reversal of 61442648 is 84624416.

It is a super-3 number, since 3×61442648³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132188 + ... + 132651.

It is an arithmetic number, because the mean of its divisors is an integer number (7448625).

Almost surely, 2^61442648 is an apocalyptic number.

It is an amenable number.

61442648 is a deficient number, since it is larger than the sum of its proper divisors (57735352).

61442648 is a wasteful number, since it uses less digits than its factorization.

61442648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264874 (or 264870 counting only the distinct ones).

The product of its digits is 36864, while the sum is 35.

The square root of 61442648 is about 7838.5360878164. The cubic root of 61442648 is about 394.5996006739.

The spelling of 61442648 in words is "sixty-one million, four hundred forty-two thousand, six hundred forty-eight".