61972119 has 24 divisors (see below), whose sum is σ = 99121152. Its totient is φ = 36994320.

The previous prime is 61972093. The next prime is 61972147. The reversal of 61972119 is 91127916.

61972119 is a `hidden beast` number, since 619 + 7 + 21 + 19 = 666.

It is not a de Polignac number, because 61972119 - 2⁹ = 61971607 is a prime.

It is a super-2 number, since 2×61972119² = 7681087066700322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61972019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1962 + ... + 11304.

It is an arithmetic number, because the mean of its divisors is an integer number (4130048).

Almost surely, 2^61972119 is an apocalyptic number.

61972119 is a deficient number, since it is larger than the sum of its proper divisors (37149033).

61972119 is a wasteful number, since it uses less digits than its factorization.

61972119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9427 (or 9424 counting only the distinct ones).

The product of its digits is 6804, while the sum is 36.

The square root of 61972119 is about 7872.2372296571. The cubic root of 61972119 is about 395.7298241286.

The spelling of 61972119 in words is "sixty-one million, nine hundred seventy-two thousand, one hundred nineteen".