61869572 has 6 divisors (see below), whose sum is σ = 108271758. Its totient is φ = 30934784.

The previous prime is 61869569. The next prime is 61869589. The reversal of 61869572 is 27596816.

It can be written as a sum of positive squares in only one way, i.e., 53202436 + 8667136 = 7294^2 + 2944^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7733693 + ... + 7733700.

It is an arithmetic number, because the mean of its divisors is an integer number (18045293).

Almost surely, 2^61869572 is an apocalyptic number.

It is an amenable number.

61869572 is a deficient number, since it is larger than the sum of its proper divisors (46402186).

61869572 is a wasteful number, since it uses less digits than its factorization.

61869572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15467397 (or 15467395 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 61869572 is about 7865.7213273800. The cubic root of 61869572 is about 395.5114285502.

The spelling of 61869572 in words is "sixty-one million, eight hundred sixty-nine thousand, five hundred seventy-two".