70978129 has 8 divisors (see below), whose sum is σ = 75414240. Its totient is φ = 66612096.

The previous prime is 70978097. The next prime is 70978147. The reversal of 70978129 is 92187907.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70978129 - 2⁵ = 70978097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70978169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15424 + ... + 19489.

It is an arithmetic number, because the mean of its divisors is an integer number (9426780).

Almost surely, 2^70978129 is an apocalyptic number.

It is an amenable number.

70978129 is a deficient number, since it is larger than the sum of its proper divisors (4436111).

70978129 is a wasteful number, since it uses less digits than its factorization.

70978129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35039.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 70978129 is about 8424.8518681339. The cubic root of 70978129 is about 414.0392523480.

The spelling of 70978129 in words is "seventy million, nine hundred seventy-eight thousand, one hundred twenty-nine".