70378021 has 8 divisors (see below), whose sum is σ = 80926784. Its totient is φ = 59952960.

The previous prime is 70378003. The next prime is 70378027. The reversal of 70378021 is 12087307.

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 70378021 - 2¹¹ = 70375973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70378027) 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, 29700 + ... + 31981.

It is an arithmetic number, because the mean of its divisors is an integer number (10115848).

Almost surely, 2^70378021 is an apocalyptic number.

It is an amenable number.

70378021 is a deficient number, since it is larger than the sum of its proper divisors (10548763).

70378021 is a wasteful number, since it uses less digits than its factorization.

70378021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61851.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 70378021 is about 8389.1609234774. The cubic root of 70378021 is about 412.8690710951.

The spelling of 70378021 in words is "seventy million, three hundred seventy-eight thousand, twenty-one".