61990652 has 6 divisors (see below), whose sum is σ = 108483648. Its totient is φ = 30995324.

The previous prime is 61990637. The next prime is 61990657. The reversal of 61990652 is 25609916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61990657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7748828 + ... + 7748835.

It is an arithmetic number, because the mean of its divisors is an integer number (18080608).

Almost surely, 2^61990652 is an apocalyptic number.

It is an amenable number.

61990652 is a deficient number, since it is larger than the sum of its proper divisors (46492996).

61990652 is a wasteful number, since it uses less digits than its factorization.

61990652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15497667 (or 15497665 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 61990652 is about 7873.4142530417. The cubic root of 61990652 is about 395.7692683711.

The spelling of 61990652 in words is "sixty-one million, nine hundred ninety thousand, six hundred fifty-two".