70623929 has 2 divisors, whose sum is σ = 70623930. Its totient is φ = 70623928.

The previous prime is 70623919. The next prime is 70623977. The reversal of 70623929 is 92932607.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61653904 + 8970025 = 7852^2 + 2995^2 .

It is an emirp because it is prime and its reverse (92932607) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70623929 - 2¹² = 70619833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70623892 and 70623901.

It is not a weakly prime, because it can be changed into another prime (70623919) 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, 35311964 + 35311965.

It is an arithmetic number, because the mean of its divisors is an integer number (35311965).

Almost surely, 2^70623929 is an apocalyptic number.

It is an amenable number.

70623929 is a deficient number, since it is larger than the sum of its proper divisors (1).

70623929 is an equidigital number, since it uses as much as digits as its factorization.

70623929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 70623929 is about 8403.8044360873. The cubic root of 70623929 is about 413.3493810251.

The spelling of 70623929 in words is "seventy million, six hundred twenty-three thousand, nine hundred twenty-nine".