72906105 has 8 divisors (see below), whose sum is σ = 116649792. Its totient is φ = 38883248.

The previous prime is 72906101. The next prime is 72906107. The reversal of 72906105 is 50160927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72906105 - 2² = 72906101 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72906101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2430189 + ... + 2430218.

It is an arithmetic number, because the mean of its divisors is an integer number (14581224).

Almost surely, 2^72906105 is an apocalyptic number.

It is an amenable number.

72906105 is a deficient number, since it is larger than the sum of its proper divisors (43743687).

72906105 is a wasteful number, since it uses less digits than its factorization.

72906105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4860415.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 72906105 is about 8538.5071880277. The cubic root of 72906105 is about 417.7546559753.

The spelling of 72906105 in words is "seventy-two million, nine hundred six thousand, one hundred five".