61243016 has 8 divisors (see below), whose sum is σ = 114830670. Its totient is φ = 30621504.

The previous prime is 61242977. The next prime is 61243057. The reversal of 61243016 is 61034216.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 40576900 + 20666116 = 6370^2 + 4546^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 61242982 and 61243000.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3827681 + ... + 3827696.

Almost surely, 2^61243016 is an apocalyptic number.

It is an amenable number.

61243016 is a deficient number, since it is larger than the sum of its proper divisors (53587654).

61243016 is a wasteful number, since it uses less digits than its factorization.

61243016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7655383 (or 7655379 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 61243016 is about 7825.7917171364. The cubic root of 61243016 is about 394.1717752711.

The spelling of 61243016 in words is "sixty-one million, two hundred forty-three thousand, sixteen".