70922987 has 2 divisors, whose sum is σ = 70922988. Its totient is φ = 70922986.

The previous prime is 70922977. The next prime is 70923037. The reversal of 70922987 is 78922907.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70922987 - 2¹⁴ = 70906603 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70922927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35461493 + 35461494.

It is an arithmetic number, because the mean of its divisors is an integer number (35461494).

Almost surely, 2^70922987 is an apocalyptic number.

70922987 is a deficient number, since it is larger than the sum of its proper divisors (1).

70922987 is an equidigital number, since it uses as much as digits as its factorization.

70922987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 70922987 is about 8421.5786524855. The cubic root of 70922987 is about 413.9320039713.

The spelling of 70922987 in words is "seventy million, nine hundred twenty-two thousand, nine hundred eighty-seven".