70848991 has 2 divisors, whose sum is σ = 70848992. Its totient is φ = 70848990.

The previous prime is 70848971. The next prime is 70848997. The reversal of 70848991 is 19984807.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (19984807) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70848991 - 2¹³ = 70840799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70848997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35424495 + 35424496.

It is an arithmetic number, because the mean of its divisors is an integer number (35424496).

Almost surely, 2^70848991 is an apocalyptic number.

70848991 is a deficient number, since it is larger than the sum of its proper divisors (1).

70848991 is an equidigital number, since it uses as much as digits as its factorization.

70848991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 70848991 is about 8417.1842679129. The cubic root of 70848991 is about 413.7879981410.

The spelling of 70848991 in words is "seventy million, eight hundred forty-eight thousand, nine hundred ninety-one".