74648687 has 2 divisors, whose sum is σ = 74648688. Its totient is φ = 74648686.

The previous prime is 74648677. The next prime is 74648719. The reversal of 74648687 is 78684647.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74648687 - 2¹⁴ = 74632303 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74648617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37324343 + 37324344.

It is an arithmetic number, because the mean of its divisors is an integer number (37324344).

Almost surely, 2^74648687 is an apocalyptic number.

74648687 is a deficient number, since it is larger than the sum of its proper divisors (1).

74648687 is an equidigital number, since it uses as much as digits as its factorization.

74648687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1806336, while the sum is 50.

The square root of 74648687 is about 8639.9471641903. The cubic root of 74648687 is about 421.0568377137.

The spelling of 74648687 in words is "seventy-four million, six hundred forty-eight thousand, six hundred eighty-seven".