72847077 has 4 divisors (see below), whose sum is σ = 97129440. Its totient is φ = 48564716.

The previous prime is 72847067. The next prime is 72847079. The reversal of 72847077 is 77074827.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72847077 - 2¹¹ = 72845029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72847079) 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, 12141177 + ... + 12141182.

It is an arithmetic number, because the mean of its divisors is an integer number (24282360).

Almost surely, 2^72847077 is an apocalyptic number.

It is an amenable number.

72847077 is a deficient number, since it is larger than the sum of its proper divisors (24282363).

72847077 is a wasteful number, since it uses less digits than its factorization.

72847077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24282362.

The product of its (nonzero) digits is 153664, while the sum is 42.

The square root of 72847077 is about 8535.0499119806. The cubic root of 72847077 is about 417.6418813323.

The spelling of 72847077 in words is "seventy-two million, eight hundred forty-seven thousand, seventy-seven".