61398673 has 4 divisors (see below), whose sum is σ = 70169920. Its totient is φ = 52627428.

The previous prime is 61398653. The next prime is 61398703. The reversal of 61398673 is 37689316.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 61398673 - 2⁵ = 61398641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61398613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4385613 + ... + 4385626.

It is an arithmetic number, because the mean of its divisors is an integer number (17542480).

Almost surely, 2^61398673 is an apocalyptic number.

It is an amenable number.

61398673 is a deficient number, since it is larger than the sum of its proper divisors (8771247).

61398673 is an equidigital number, since it uses as much as digits as its factorization.

61398673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8771246.

The product of its digits is 163296, while the sum is 43.

The square root of 61398673 is about 7835.7305339068. The cubic root of 61398673 is about 394.5054388312.

The spelling of 61398673 in words is "sixty-one million, three hundred ninety-eight thousand, six hundred seventy-three".