72677197 has 2 divisors, whose sum is σ = 72677198. Its totient is φ = 72677196.

The previous prime is 72677183. The next prime is 72677201. The reversal of 72677197 is 79177627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62315236 + 10361961 = 7894^2 + 3219^2 .

It is a cyclic number.

It is not a de Polignac number, because 72677197 - 2⁷ = 72677069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72677177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36338598 + 36338599.

It is an arithmetic number, because the mean of its divisors is an integer number (36338599).

Almost surely, 2^72677197 is an apocalyptic number.

It is an amenable number.

72677197 is a deficient number, since it is larger than the sum of its proper divisors (1).

72677197 is an equidigital number, since it uses as much as digits as its factorization.

72677197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259308, while the sum is 46.

The square root of 72677197 is about 8525.0921989149. The cubic root of 72677197 is about 417.3169805103.

The spelling of 72677197 in words is "seventy-two million, six hundred seventy-seven thousand, one hundred ninety-seven".