73774691 has 2 divisors, whose sum is σ = 73774692. Its totient is φ = 73774690.

The previous prime is 73774661. The next prime is 73774697. The reversal of 73774691 is 19647737.

It is a strong prime.

It is an emirp because it is prime and its reverse (19647737) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73774691 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73774697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36887345 + 36887346.

It is an arithmetic number, because the mean of its divisors is an integer number (36887346).

Almost surely, 2^73774691 is an apocalyptic number.

73774691 is a deficient number, since it is larger than the sum of its proper divisors (1).

73774691 is an equidigital number, since it uses as much as digits as its factorization.

73774691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 222264, while the sum is 44.

The square root of 73774691 is about 8589.2194639560. The cubic root of 73774691 is about 419.4071207693.

The spelling of 73774691 in words is "seventy-three million, seven hundred seventy-four thousand, six hundred ninety-one".