72627545 has 4 divisors (see below), whose sum is σ = 87153060. Its totient is φ = 58102032.

The previous prime is 72627539. The next prime is 72627547. The reversal of 72627545 is 54572627.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54572627 = 307 ⋅177761.

It can be written as a sum of positive squares in 2 ways, for example, as 56595529 + 16032016 = 7523^2 + 4004^2 .

It is a cyclic number.

It is not a de Polignac number, because 72627545 - 2¹² = 72623449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72627499 and 72627508.

It is not an unprimeable number, because it can be changed into a prime (72627547) 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, 7262750 + ... + 7262759.

It is an arithmetic number, because the mean of its divisors is an integer number (21788265).

Almost surely, 2^72627545 is an apocalyptic number.

It is an amenable number.

72627545 is a deficient number, since it is larger than the sum of its proper divisors (14525515).

72627545 is a wasteful number, since it uses less digits than its factorization.

72627545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14525514.

The product of its digits is 117600, while the sum is 38.

The square root of 72627545 is about 8522.1795920997. The cubic root of 72627545 is about 417.2219239037.

The spelling of 72627545 in words is "seventy-two million, six hundred twenty-seven thousand, five hundred forty-five".