70887413 has 2 divisors, whose sum is σ = 70887414. Its totient is φ = 70887412.

The previous prime is 70887409. The next prime is 70887469. The reversal of 70887413 is 31478807.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70677649 + 209764 = 8407^2 + 458^2 .

It is an emirp because it is prime and its reverse (31478807) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70887413 - 2² = 70887409 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70887473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35443706 + 35443707.

It is an arithmetic number, because the mean of its divisors is an integer number (35443707).

Almost surely, 2^70887413 is an apocalyptic number.

It is an amenable number.

70887413 is a deficient number, since it is larger than the sum of its proper divisors (1).

70887413 is an equidigital number, since it uses as much as digits as its factorization.

70887413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 70887413 is about 8419.4663132529. The cubic root of 70887413 is about 413.8627848534.

The spelling of 70887413 in words is "seventy million, eight hundred eighty-seven thousand, four hundred thirteen".