70404623 has 2 divisors, whose sum is σ = 70404624. Its totient is φ = 70404622.

The previous prime is 70404619. The next prime is 70404643. The reversal of 70404623 is 32640407.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (32640407) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70404623 - 2² = 70404619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70404592 and 70404601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70404613) 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, 35202311 + 35202312.

It is an arithmetic number, because the mean of its divisors is an integer number (35202312).

Almost surely, 2^70404623 is an apocalyptic number.

70404623 is a deficient number, since it is larger than the sum of its proper divisors (1).

70404623 is an equidigital number, since it uses as much as digits as its factorization.

70404623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 70404623 is about 8390.7462719355. The cubic root of 70404623 is about 412.9210843010.

The spelling of 70404623 in words is "seventy million, four hundred four thousand, six hundred twenty-three".