62661409 has 2 divisors, whose sum is σ = 62661410. Its totient is φ = 62661408.

The previous prime is 62661377. The next prime is 62661421. The reversal of 62661409 is 90416626.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62094400 + 567009 = 7880^2 + 753^2 .

It is a cyclic number.

It is not a de Polignac number, because 62661409 - 2⁵ = 62661377 is a prime.

It is not a weakly prime, because it can be changed into another prime (62661479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31330704 + 31330705.

It is an arithmetic number, because the mean of its divisors is an integer number (31330705).

Almost surely, 2^62661409 is an apocalyptic number.

It is an amenable number.

62661409 is a deficient number, since it is larger than the sum of its proper divisors (1).

62661409 is an equidigital number, since it uses as much as digits as its factorization.

62661409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 62661409 is about 7915.8959695034. The cubic root of 62661409 is about 397.1915970789.

The spelling of 62661409 in words is "sixty-two million, six hundred sixty-one thousand, four hundred nine".