70745427 has 16 divisors (see below), whose sum is σ = 104942880. Its totient is φ = 47102976.

The previous prime is 70745419. The next prime is 70745429. The reversal of 70745427 is 72454707.

It is a happy number.

It is not a de Polignac number, because 70745427 - 2³ = 70745419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70745391 and 70745400.

It is not an unprimeable number, because it can be changed into a prime (70745429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31783 + ... + 33935.

It is an arithmetic number, because the mean of its divisors is an integer number (6558930).

Almost surely, 2^70745427 is an apocalyptic number.

70745427 is a deficient number, since it is larger than the sum of its proper divisors (34197453).

70745427 is a wasteful number, since it uses less digits than its factorization.

70745427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379 (or 3373 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 36.

The square root of 70745427 is about 8411.0300796038. The cubic root of 70745427 is about 413.5862806707.

The spelling of 70745427 in words is "seventy million, seven hundred forty-five thousand, four hundred twenty-seven".