70672549 has 2 divisors, whose sum is σ = 70672550. Its totient is φ = 70672548.

The previous prime is 70672499. The next prime is 70672559. The reversal of 70672549 is 94527607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61732449 + 8940100 = 7857^2 + 2990^2 .

It is a cyclic number.

It is not a de Polignac number, because 70672549 - 2⁷ = 70672421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70672559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35336274 + 35336275.

It is an arithmetic number, because the mean of its divisors is an integer number (35336275).

Almost surely, 2^70672549 is an apocalyptic number.

It is an amenable number.

70672549 is a deficient number, since it is larger than the sum of its proper divisors (1).

70672549 is an equidigital number, since it uses as much as digits as its factorization.

70672549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 70672549 is about 8406.6966758650. The cubic root of 70672549 is about 413.4442140235. Note that the first 3 decimals are identical.

The spelling of 70672549 in words is "seventy million, six hundred seventy-two thousand, five hundred forty-nine".