16072649 has 2 divisors, whose sum is σ = 16072650. Its totient is φ = 16072648.

The previous prime is 16072643. The next prime is 16072673. The reversal of 16072649 is 94627061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10465225 + 5607424 = 3235^2 + 2368^2 .

It is an emirp because it is prime and its reverse (94627061) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16072649 is a prime.

It is not a weakly prime, because it can be changed into another prime (16072643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8036324 + 8036325.

It is an arithmetic number, because the mean of its divisors is an integer number (8036325).

Almost surely, 2^16072649 is an apocalyptic number.

It is an amenable number.

16072649 is a deficient number, since it is larger than the sum of its proper divisors (1).

16072649 is an equidigital number, since it uses as much as digits as its factorization.

16072649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 16072649 is about 4009.0708399828. The cubic root of 16072649 is about 252.3650175505.

The spelling of 16072649 in words is "sixteen million, seventy-two thousand, six hundred forty-nine".