70292881 has 2 divisors, whose sum is σ = 70292882. Its totient is φ = 70292880.

The previous prime is 70292867. The next prime is 70292921. The reversal of 70292881 is 18829207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53523856 + 16769025 = 7316^2 + 4095^2 .

It is a cyclic number.

It is not a de Polignac number, because 70292881 - 2¹³ = 70284689 is a prime.

It is a super-2 number, since 2×70292881² = 9882178238560322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70292881.

It is not a weakly prime, because it can be changed into another prime (70292821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35146440 + 35146441.

It is an arithmetic number, because the mean of its divisors is an integer number (35146441).

Almost surely, 2^70292881 is an apocalyptic number.

It is an amenable number.

70292881 is a deficient number, since it is larger than the sum of its proper divisors (1).

70292881 is an equidigital number, since it uses as much as digits as its factorization.

70292881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 70292881 is about 8384.0849828708. The cubic root of 70292881 is about 412.7025140900.

The spelling of 70292881 in words is "seventy million, two hundred ninety-two thousand, eight hundred eighty-one".