70378811 has 4 divisors (see below), whose sum is σ = 71532624. Its totient is φ = 69225000.

The previous prime is 70378807. The next prime is 70378813. The reversal of 70378811 is 11887307.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11887307 = 43 ⋅276449.

It is a cyclic number.

It is not a de Polignac number, because 70378811 - 2² = 70378807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70378813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576815 + ... + 576936.

It is an arithmetic number, because the mean of its divisors is an integer number (17883156).

Almost surely, 2^70378811 is an apocalyptic number.

70378811 is a deficient number, since it is larger than the sum of its proper divisors (1153813).

70378811 is a wasteful number, since it uses less digits than its factorization.

70378811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153812.

The product of its (nonzero) digits is 9408, while the sum is 35.

The square root of 70378811 is about 8389.2080079111. The cubic root of 70378811 is about 412.8706159208.

The spelling of 70378811 in words is "seventy million, three hundred seventy-eight thousand, eight hundred eleven".