61004731 has 4 divisors (see below), whose sum is σ = 62302752. Its totient is φ = 59706712.

The previous prime is 61004711. The next prime is 61004743. The reversal of 61004731 is 13740016.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61004731 - 2¹³ = 60996539 is a prime.

It is a super-2 number, since 2×61004731² = 7443154408764722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61004701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648940 + ... + 649033.

It is an arithmetic number, because the mean of its divisors is an integer number (15575688).

Almost surely, 2^61004731 is an apocalyptic number.

61004731 is a deficient number, since it is larger than the sum of its proper divisors (1298021).

61004731 is a wasteful number, since it uses less digits than its factorization.

61004731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298020.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 61004731 is about 7810.5525412739. The cubic root of 61004731 is about 393.6598948603.

Adding to 61004731 its reverse (13740016), we get a palindrome (74744747).

The spelling of 61004731 in words is "sixty-one million, four thousand, seven hundred thirty-one".