61969072 has 20 divisors (see below), whose sum is σ = 130980456. Its totient is φ = 28167680.

The previous prime is 61969069. The next prime is 61969079. The reversal of 61969072 is 27096916.

It is not an unprimeable number, because it can be changed into a prime (61969079) 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, 175873 + ... + 176224.

Almost surely, 2^61969072 is an apocalyptic number.

It is an amenable number.

61969072 is an abundant number, since it is smaller than the sum of its proper divisors (69011384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61969072 is a wasteful number, since it uses less digits than its factorization.

61969072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352116 (or 352110 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 61969072 is about 7872.0436990657. The cubic root of 61969072 is about 395.7233383704.

The spelling of 61969072 in words is "sixty-one million, nine hundred sixty-nine thousand, seventy-two".