74402641 has 2 divisors, whose sum is σ = 74402642. Its totient is φ = 74402640.

The previous prime is 74402639. The next prime is 74402663. The reversal of 74402641 is 14620447.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49999041 + 24403600 = 7071^2 + 4940^2 .

It is an emirp because it is prime and its reverse (14620447) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74402641 - 2¹ = 74402639 is a prime.

Together with 74402639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (74402621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37201320 + 37201321.

It is an arithmetic number, because the mean of its divisors is an integer number (37201321).

Almost surely, 2^74402641 is an apocalyptic number.

It is an amenable number.

74402641 is a deficient number, since it is larger than the sum of its proper divisors (1).

74402641 is an equidigital number, since it uses as much as digits as its factorization.

74402641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 74402641 is about 8625.6965515835. The cubic root of 74402641 is about 420.5937200233.

The spelling of 74402641 in words is "seventy-four million, four hundred two thousand, six hundred forty-one".