145705810 has 64 divisors (see below), whose sum is σ = 287712000. Its totient is φ = 52918272.

The previous prime is 145705787. The next prime is 145705811. The reversal of 145705810 is 18507541.

145705810 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145705810² = 42460366135512200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145705811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 732091 + ... + 732289.

It is an arithmetic number, because the mean of its divisors is an integer number (4495500).

Almost surely, 2^145705810 is an apocalyptic number.

145705810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145705810 is a deficient number, since it is larger than the sum of its proper divisors (142006190).

145705810 is a wasteful number, since it uses less digits than its factorization.

145705810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 145705810 is about 12070.8661661042. The cubic root of 145705810 is about 526.2098296850.

The spelling of 145705810 in words is "one hundred forty-five million, seven hundred five thousand, eight hundred ten".