61153968 has 20 divisors (see below), whose sum is σ = 157981208. Its totient is φ = 20384640.

The previous prime is 61153949. The next prime is 61153969. The reversal of 61153968 is 86935116.

It is not an unprimeable number, because it can be changed into a prime (61153969) 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, 636973 + ... + 637068.

Almost surely, 2^61153968 is an apocalyptic number.

It is an amenable number.

61153968 is an abundant number, since it is smaller than the sum of its proper divisors (96827240).

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

61153968 is a wasteful number, since it uses less digits than its factorization.

61153968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274052 (or 1274046 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 61153968 is about 7820.1002551118. The cubic root of 61153968 is about 393.9806392782.

The spelling of 61153968 in words is "sixty-one million, one hundred fifty-three thousand, nine hundred sixty-eight".