70378578 has 16 divisors (see below), whose sum is σ = 156396960. Its totient is φ = 23459508.

The previous prime is 70378559. The next prime is 70378579. The reversal of 70378578 is 87587307.

70378578 is a `hidden beast` number, since 7 + 0 + 3 + 78 + 578 = 666.

It is not an unprimeable number, because it can be changed into a prime (70378579) 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, 651600 + ... + 651707.

It is an arithmetic number, because the mean of its divisors is an integer number (9774810).

Almost surely, 2^70378578 is an apocalyptic number.

70378578 is an abundant number, since it is smaller than the sum of its proper divisors (86018382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70378578 is a wasteful number, since it uses less digits than its factorization.

70378578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303318 (or 1303312 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The square root of 70378578 is about 8389.1941210107. The cubic root of 70378578 is about 412.8701602962.

The spelling of 70378578 in words is "seventy million, three hundred seventy-eight thousand, five hundred seventy-eight".