72434587 has 2 divisors, whose sum is σ = 72434588. Its totient is φ = 72434586.

The previous prime is 72434573. The next prime is 72434591. The reversal of 72434587 is 78543427.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72434587 - 2¹⁹ = 71910299 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72434597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36217293 + 36217294.

It is an arithmetic number, because the mean of its divisors is an integer number (36217294).

Almost surely, 2^72434587 is an apocalyptic number.

72434587 is a deficient number, since it is larger than the sum of its proper divisors (1).

72434587 is an equidigital number, since it uses as much as digits as its factorization.

72434587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188160, while the sum is 40.

The square root of 72434587 is about 8510.8511325249. The cubic root of 72434587 is about 416.8521022783.

The spelling of 72434587 in words is "seventy-two million, four hundred thirty-four thousand, five hundred eighty-seven".