70604921 has 2 divisors, whose sum is σ = 70604922. Its totient is φ = 70604920.

The previous prime is 70604909. The next prime is 70604923. The reversal of 70604921 is 12940607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58736896 + 11868025 = 7664^2 + 3445^2 .

It is a cyclic number.

It is not a de Polignac number, because 70604921 - 2¹⁴ = 70588537 is a prime.

Together with 70604923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70604923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35302460 + 35302461.

It is an arithmetic number, because the mean of its divisors is an integer number (35302461).

Almost surely, 2^70604921 is an apocalyptic number.

It is an amenable number.

70604921 is a deficient number, since it is larger than the sum of its proper divisors (1).

70604921 is an equidigital number, since it uses as much as digits as its factorization.

70604921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 70604921 is about 8402.6734436131. The cubic root of 70604921 is about 413.3122942089.

The spelling of 70604921 in words is "seventy million, six hundred four thousand, nine hundred twenty-one".