61254687 has 8 divisors (see below), whose sum is σ = 87955504. Its totient is φ = 37695168.

The previous prime is 61254673. The next prime is 61254691. The reversal of 61254687 is 78645216.

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

It is not a de Polignac number, because 61254687 - 2⁷ = 61254559 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1570633 = 61254687 / (6 + 1 + 2 + 5 + 4 + 6 + 8 + 7).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61254617) 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, 785278 + ... + 785355.

It is an arithmetic number, because the mean of its divisors is an integer number (10994438).

Almost surely, 2^61254687 is an apocalyptic number.

61254687 is a deficient number, since it is larger than the sum of its proper divisors (26700817).

61254687 is a wasteful number, since it uses less digits than its factorization.

61254687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570649.

The product of its digits is 80640, while the sum is 39.

The square root of 61254687 is about 7826.5373569670. The cubic root of 61254687 is about 394.1968126108.

The spelling of 61254687 in words is "sixty-one million, two hundred fifty-four thousand, six hundred eighty-seven".