61390173 has 8 divisors (see below), whose sum is σ = 88150048. Its totient is φ = 37778544.

The previous prime is 61390117. The next prime is 61390207. The reversal of 61390173 is 37109316.

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

It is not a de Polignac number, because 61390173 - 2¹⁰ = 61389149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61390173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61390103) 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, 787015 + ... + 787092.

It is an arithmetic number, because the mean of its divisors is an integer number (11018756).

Almost surely, 2^61390173 is an apocalyptic number.

It is an amenable number.

61390173 is a deficient number, since it is larger than the sum of its proper divisors (26759875).

61390173 is a wasteful number, since it uses less digits than its factorization.

61390173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574123.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 61390173 is about 7835.1881279265. The cubic root of 61390173 is about 394.4872329492.

Adding to 61390173 its reverse (37109316), we get a palindrome (98499489).

The spelling of 61390173 in words is "sixty-one million, three hundred ninety thousand, one hundred seventy-three".