72437087 has 4 divisors (see below), whose sum is σ = 72455376. Its totient is φ = 72418800.

The previous prime is 72437077. The next prime is 72437089. The reversal of 72437087 is 78073427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78073427 = 73 ⋅1069499.

It is a cyclic number.

It is not a de Polignac number, because 72437087 - 2⁸ = 72436831 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72437087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72437089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443 + ... + 12044.

It is an arithmetic number, because the mean of its divisors is an integer number (18113844).

Almost surely, 2^72437087 is an apocalyptic number.

72437087 is a deficient number, since it is larger than the sum of its proper divisors (18289).

72437087 is a wasteful number, since it uses less digits than its factorization.

72437087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18288.

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 72437087 is about 8510.9980025847. The cubic root of 72437087 is about 416.8568979535.

The spelling of 72437087 in words is "seventy-two million, four hundred thirty-seven thousand, eighty-seven".