70774409 has 2 divisors, whose sum is σ = 70774410. Its totient is φ = 70774408.

The previous prime is 70774399. The next prime is 70774447. The reversal of 70774409 is 90447707.

It is an a-pointer prime, because the next prime (70774447) can be obtained adding 70774409 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60016009 + 10758400 = 7747^2 + 3280^2 .

It is a cyclic number.

It is not a de Polignac number, because 70774409 - 2⁴ = 70774393 is a prime.

It is not a weakly prime, because it can be changed into another prime (70774469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35387204 + 35387205.

It is an arithmetic number, because the mean of its divisors is an integer number (35387205).

Almost surely, 2^70774409 is an apocalyptic number.

It is an amenable number.

70774409 is a deficient number, since it is larger than the sum of its proper divisors (1).

70774409 is an equidigital number, since it uses as much as digits as its factorization.

70774409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 70774409 is about 8412.7527599472. The cubic root of 70774409 is about 413.6427503802.

The spelling of 70774409 in words is "seventy million, seven hundred seventy-four thousand, four hundred nine".