72074987 has 2 divisors, whose sum is σ = 72074988. Its totient is φ = 72074986.

The previous prime is 72074983. The next prime is 72075013. The reversal of 72074987 is 78947027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72074987 - 2² = 72074983 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72074983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36037493 + 36037494.

It is an arithmetic number, because the mean of its divisors is an integer number (36037494).

Almost surely, 2^72074987 is an apocalyptic number.

72074987 is a deficient number, since it is larger than the sum of its proper divisors (1).

72074987 is an equidigital number, since it uses as much as digits as its factorization.

72074987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 72074987 is about 8489.6988756964. The cubic root of 72074987 is about 416.1611397279.

The spelling of 72074987 in words is "seventy-two million, seventy-four thousand, nine hundred eighty-seven".