61448019 has 8 divisors (see below), whose sum is σ = 85492992. Its totient is φ = 39184200.

The previous prime is 61447949. The next prime is 61448021. The reversal of 61448019 is 91084416.

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

It is not a de Polignac number, because 61448019 - 2⁷ = 61447891 is a prime.

It is a super-2 number, since 2×61448019² = 7551718078048722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61448029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445207 + ... + 445344.

It is an arithmetic number, because the mean of its divisors is an integer number (10686624).

Almost surely, 2^61448019 is an apocalyptic number.

61448019 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

61448019 is a deficient number, since it is larger than the sum of its proper divisors (24044973).

61448019 is a wasteful number, since it uses less digits than its factorization.

61448019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890577.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 61448019 is about 7838.8786825668. The cubic root of 61448019 is about 394.6110982942.

The spelling of 61448019 in words is "sixty-one million, four hundred forty-eight thousand, nineteen".