60643949 has 2 divisors, whose sum is σ = 60643950. Its totient is φ = 60643948.

The previous prime is 60643931. The next prime is 60643951. The reversal of 60643949 is 94934606.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42640900 + 18003049 = 6530^2 + 4243^2 .

It is a cyclic number.

It is not a de Polignac number, because 60643949 - 2¹² = 60639853 is a prime.

Together with 60643951, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60643909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30321974 + 30321975.

It is an arithmetic number, because the mean of its divisors is an integer number (30321975).

Almost surely, 2^60643949 is an apocalyptic number.

It is an amenable number.

60643949 is a deficient number, since it is larger than the sum of its proper divisors (1).

60643949 is an equidigital number, since it uses as much as digits as its factorization.

60643949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 60643949 is about 7787.4224875757. The cubic root of 60643949 is about 392.8823250729.

The spelling of 60643949 in words is "sixty million, six hundred forty-three thousand, nine hundred forty-nine".