70626251 has 2 divisors, whose sum is σ = 70626252. Its totient is φ = 70626250.

The previous prime is 70626247. The next prime is 70626299. The reversal of 70626251 is 15262607.

It is a weak prime.

It is an emirp because it is prime and its reverse (15262607) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70626251 - 2² = 70626247 is a prime.

It is not a weakly prime, because it can be changed into another prime (70616251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35313125 + 35313126.

It is an arithmetic number, because the mean of its divisors is an integer number (35313126).

Almost surely, 2^70626251 is an apocalyptic number.

70626251 is a deficient number, since it is larger than the sum of its proper divisors (1).

70626251 is an equidigital number, since it uses as much as digits as its factorization.

70626251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 70626251 is about 8403.9425866673. The cubic root of 70626251 is about 413.3539110607.

Adding to 70626251 its reverse (15262607), we get a palindrome (85888858).

The spelling of 70626251 in words is "seventy million, six hundred twenty-six thousand, two hundred fifty-one".