61673513 has 8 divisors (see below), whose sum is σ = 67344480. Its totient is φ = 56013280.

The previous prime is 61673497. The next prime is 61673531. The reversal of 61673513 is 31537616.

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

It is a cyclic number.

It is not a de Polignac number, because 61673513 - 2⁴ = 61673497 is a prime.

It is a super-2 number, since 2×61673513² = 7607244411522338, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61673513.

It is not an unprimeable number, because it can be changed into a prime (61673713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13733 + ... + 17661.

It is an arithmetic number, because the mean of its divisors is an integer number (8418060).

Almost surely, 2^61673513 is an apocalyptic number.

It is an amenable number.

61673513 is a deficient number, since it is larger than the sum of its proper divisors (5670967).

61673513 is a wasteful number, since it uses less digits than its factorization.

61673513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5367.

The product of its digits is 11340, while the sum is 32.

The square root of 61673513 is about 7853.2485634927. The cubic root of 61673513 is about 395.0932066539.

The spelling of 61673513 in words is "sixty-one million, six hundred seventy-three thousand, five hundred thirteen".