71628619 has 2 divisors, whose sum is σ = 71628620. Its totient is φ = 71628618.

The previous prime is 71628617. The next prime is 71628649. The reversal of 71628619 is 91682617.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71628619 - 2¹ = 71628617 is a prime.

It is a super-2 number, since 2×71628619² = 10261318119694322, which contains 22 as substring.

Together with 71628617, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (71628617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35814309 + 35814310.

It is an arithmetic number, because the mean of its divisors is an integer number (35814310).

Almost surely, 2^71628619 is an apocalyptic number.

71628619 is a deficient number, since it is larger than the sum of its proper divisors (1).

71628619 is an equidigital number, since it uses as much as digits as its factorization.

71628619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 40.

The square root of 71628619 is about 8463.3692463463. The cubic root of 71628619 is about 415.3002501302.

The spelling of 71628619 in words is "seventy-one million, six hundred twenty-eight thousand, six hundred nineteen".