61692641 has 2 divisors, whose sum is σ = 61692642. Its totient is φ = 61692640.

The previous prime is 61692637. The next prime is 61692661. The reversal of 61692641 is 14629616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60528400 + 1164241 = 7780^2 + 1079^2 .

It is a cyclic number.

It is not a de Polignac number, because 61692641 - 2² = 61692637 is a prime.

It is not a weakly prime, because it can be changed into another prime (61692611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30846320 + 30846321.

It is an arithmetic number, because the mean of its divisors is an integer number (30846321).

Almost surely, 2^61692641 is an apocalyptic number.

It is an amenable number.

61692641 is a deficient number, since it is larger than the sum of its proper divisors (1).

61692641 is an equidigital number, since it uses as much as digits as its factorization.

61692641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 35.

The square root of 61692641 is about 7854.4663090499. The cubic root of 61692641 is about 395.1340483990.

The spelling of 61692641 in words is "sixty-one million, six hundred ninety-two thousand, six hundred forty-one".