61207487 has 12 divisors (see below), whose sum is σ = 69601560. Its totient is φ = 53721360.

The previous prime is 61207483. The next prime is 61207501. The reversal of 61207487 is 78470216.

It is a happy number.

It is not a de Polignac number, because 61207487 - 2² = 61207483 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 (61207483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5213 + ... + 12230.

It is an arithmetic number, because the mean of its divisors is an integer number (5800130).

Almost surely, 2^61207487 is an apocalyptic number.

61207487 is a deficient number, since it is larger than the sum of its proper divisors (8394073).

61207487 is a wasteful number, since it uses less digits than its factorization.

61207487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17494 (or 17483 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 61207487 is about 7823.5213938482. The cubic root of 61207487 is about 394.0955367112.

The spelling of 61207487 in words is "sixty-one million, two hundred seven thousand, four hundred eighty-seven".