61661548 has 24 divisors (see below), whose sum is σ = 117135872. Its totient is φ = 28232064.

The previous prime is 61661539. The next prime is 61661617. The reversal of 61661548 is 84516616.

It is a super-3 number, since 3×61661548³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1936 + ... + 11272.

Almost surely, 2^61661548 is an apocalyptic number.

It is an amenable number.

61661548 is a deficient number, since it is larger than the sum of its proper divisors (55474324).

61661548 is a wasteful number, since it uses less digits than its factorization.

61661548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9481 (or 9479 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 61661548 is about 7852.4867398806. The cubic root of 61661548 is about 395.0676549180.

The spelling of 61661548 in words is "sixty-one million, six hundred sixty-one thousand, five hundred forty-eight".