61089984 has 56 divisors (see below), whose sum is σ = 179598320. Its totient is φ = 20362752.

The previous prime is 61089967. The next prime is 61089991. The reversal of 61089984 is 48998016.

It is a super-2 number, since 2×61089984² = 7463972290240512, which contains 22 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, 15949 + ... + 19404.

Almost surely, 2^61089984 is an apocalyptic number.

61089984 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

61089984 is an abundant number, since it is smaller than the sum of its proper divisors (118508336).

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

61089984 is a wasteful number, since it uses less digits than its factorization.

61089984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35374 (or 35358 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 61089984 is about 7816.0081883273. The cubic root of 61089984 is about 393.8431870144.

The spelling of 61089984 in words is "sixty-one million, eighty-nine thousand, nine hundred eighty-four".