70161903 has 16 divisors (see below), whose sum is σ = 118792960. Its totient is φ = 40092408.

The previous prime is 70161899. The next prime is 70161919. The reversal of 70161903 is 30916107.

It is not a de Polignac number, because 70161903 - 2² = 70161899 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70161503) 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, 185425 + ... + 185802.

It is an arithmetic number, because the mean of its divisors is an integer number (7424560).

Almost surely, 2^70161903 is an apocalyptic number.

70161903 is a deficient number, since it is larger than the sum of its proper divisors (48631057).

70161903 is a wasteful number, since it uses less digits than its factorization.

70161903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371243 (or 371237 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 70161903 is about 8376.2702320305. The cubic root of 70161903 is about 412.4460226892.

The spelling of 70161903 in words is "seventy million, one hundred sixty-one thousand, nine hundred three".