145668534 has 16 divisors (see below), whose sum is σ = 317822400. Its totient is φ = 44141960.

The previous prime is 145668533. The next prime is 145668553. The reversal of 145668534 is 435866541.

145668534 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145668533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1103484 + ... + 1103615.

It is an arithmetic number, because the mean of its divisors is an integer number (19863900).

Almost surely, 2^145668534 is an apocalyptic number.

145668534 is an abundant number, since it is smaller than the sum of its proper divisors (172153866).

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

145668534 is a wasteful number, since it uses less digits than its factorization.

145668534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207115.

The product of its digits is 345600, while the sum is 42.

The square root of 145668534 is about 12069.3220190697. The cubic root of 145668534 is about 526.1649523381.

The spelling of 145668534 in words is "one hundred forty-five million, six hundred sixty-eight thousand, five hundred thirty-four".