61448018 has 8 divisors (see below), whose sum is σ = 92505612. Its totient is φ = 30612816.

The previous prime is 61447949. The next prime is 61448021. The reversal of 61448018 is 81084416.

It can be written as a sum of positive squares in 2 ways, for example, as 60481729 + 966289 = 7777^2 + 983^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×61448018² = 7551717832256648, which contains 22 as substring.

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, 54905 + ... + 56012.

Almost surely, 2^61448018 is an apocalyptic number.

61448018 is a deficient number, since it is larger than the sum of its proper divisors (31057594).

61448018 is a wasteful number, since it uses less digits than its factorization.

61448018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111196.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 61448018 is about 7838.8786187822. The cubic root of 61448018 is about 394.6110961535.

The spelling of 61448018 in words is "sixty-one million, four hundred forty-eight thousand, eighteen".