70752109 has 2 divisors, whose sum is σ = 70752110. Its totient is φ = 70752108.

The previous prime is 70752049. The next prime is 70752133. The reversal of 70752109 is 90125707.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58828900 + 11923209 = 7670^2 + 3453^2 .

It is a cyclic number.

It is not a de Polignac number, because 70752109 - 2¹¹ = 70750061 is a prime.

It is equal to p_4159732 and since 70752109 and 4159732 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70752169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35376054 + 35376055.

It is an arithmetic number, because the mean of its divisors is an integer number (35376055).

Almost surely, 2^70752109 is an apocalyptic number.

It is an amenable number.

70752109 is a deficient number, since it is larger than the sum of its proper divisors (1).

70752109 is an equidigital number, since it uses as much as digits as its factorization.

70752109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 70752109 is about 8411.4272867332. The cubic root of 70752109 is about 413.5993015195.

The spelling of 70752109 in words is "seventy million, seven hundred fifty-two thousand, one hundred nine".