72706047 has 8 divisors (see below), whose sum is σ = 97584000. Its totient is φ = 48149400.

The previous prime is 72706031. The next prime is 72706063. The reversal of 72706047 is 74060727.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72706031) and next prime (72706063).

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

It is not a de Polignac number, because 72706047 - 2⁴ = 72706031 is a prime.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 72705999 and 72706017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72706247) 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, 79797 + ... + 80702.

It is an arithmetic number, because the mean of its divisors is an integer number (12198000).

Almost surely, 2^72706047 is an apocalyptic number.

72706047 is a deficient number, since it is larger than the sum of its proper divisors (24877953).

72706047 is a wasteful number, since it uses less digits than its factorization.

72706047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160653.

The product of its (nonzero) digits is 16464, while the sum is 33.

The square root of 72706047 is about 8526.7840948390. The cubic root of 72706047 is about 417.3721927027.

The spelling of 72706047 in words is "seventy-two million, seven hundred six thousand, forty-seven".