61449487 has 12 divisors (see below), whose sum is σ = 67970448. Its totient is φ = 55510400.

The previous prime is 61449481. The next prime is 61449517. The reversal of 61449487 is 78494416.

It is not a de Polignac number, because 61449487 - 2⁷ = 61449359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61449481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18687 + ... + 21727.

It is an arithmetic number, because the mean of its divisors is an integer number (5664204).

Almost surely, 2^61449487 is an apocalyptic number.

61449487 is a deficient number, since it is larger than the sum of its proper divisors (6520961).

61449487 is a wasteful number, since it uses less digits than its factorization.

61449487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3230 (or 3219 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 61449487 is about 7838.9723178488. The cubic root of 61449487 is about 394.6142407035.

The spelling of 61449487 in words is "sixty-one million, four hundred forty-nine thousand, four hundred eighty-seven".