72623887 has 6 divisors (see below), whose sum is σ = 83024504. Its totient is φ = 62229720.

The previous prime is 72623849. The next prime is 72623893. The reversal of 72623887 is 78832627.

It is not a de Polignac number, because 72623887 - 2¹¹ = 72621839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72623687) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20937 + ... + 24157.

Almost surely, 2^72623887 is an apocalyptic number.

72623887 is a deficient number, since it is larger than the sum of its proper divisors (10400617).

72623887 is an frugal number, since it uses more digits than its factorization.

72623887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6449 (or 3228 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The square root of 72623887 is about 8521.9649729390. The cubic root of 72623887 is about 417.2149191076.

The spelling of 72623887 in words is "seventy-two million, six hundred twenty-three thousand, eight hundred eighty-seven".