61970189 has 4 divisors (see below), whose sum is σ = 61988256. Its totient is φ = 61952124.

The previous prime is 61970179. The next prime is 61970201. The reversal of 61970189 is 98107916.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 61970189 - 2⁴ = 61970173 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61970179) 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, 2129 + ... + 11334.

It is an arithmetic number, because the mean of its divisors is an integer number (15497064).

Almost surely, 2^61970189 is an apocalyptic number.

It is an amenable number.

61970189 is a deficient number, since it is larger than the sum of its proper divisors (18067).

61970189 is a wasteful number, since it uses less digits than its factorization.

61970189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18066.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 61970189 is about 7872.1146460148. The cubic root of 61970189 is about 395.7257160098.

The spelling of 61970189 in words is "sixty-one million, nine hundred seventy thousand, one hundred eighty-nine".