61487973 has 24 divisors (see below), whose sum is σ = 92967680. Its totient is φ = 39113280.

The previous prime is 61487953. The next prime is 61487983. The reversal of 61487973 is 37978416.

It is not a de Polignac number, because 61487973 - 2¹⁰ = 61486949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61487903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18858 + ... + 21876.

Almost surely, 2^61487973 is an apocalyptic number.

It is an amenable number.

61487973 is a deficient number, since it is larger than the sum of its proper divisors (31479707).

61487973 is a wasteful number, since it uses less digits than its factorization.

61487973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3129 (or 3126 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 61487973 is about 7841.4267196729. The cubic root of 61487973 is about 394.6966062090.

The spelling of 61487973 in words is "sixty-one million, four hundred eighty-seven thousand, nine hundred seventy-three".