70993451 has 2 divisors, whose sum is σ = 70993452. Its totient is φ = 70993450.

The previous prime is 70993409. The next prime is 70993457. The reversal of 70993451 is 15439907.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70993451 is a prime.

It is not a weakly prime, because it can be changed into another prime (70993457) 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, 35496725 + 35496726.

It is an arithmetic number, because the mean of its divisors is an integer number (35496726).

Almost surely, 2^70993451 is an apocalyptic number.

70993451 is a deficient number, since it is larger than the sum of its proper divisors (1).

70993451 is an equidigital number, since it uses as much as digits as its factorization.

70993451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 70993451 is about 8425.7611525606. The cubic root of 70993451 is about 414.0690429943.

The spelling of 70993451 in words is "seventy million, nine hundred ninety-three thousand, four hundred fifty-one".