145661347 has 8 divisors (see below), whose sum is σ = 158333616. Its totient is φ = 133198752.

The previous prime is 145661333. The next prime is 145661363. The reversal of 145661347 is 743166541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145661347 - 2¹⁹ = 145137059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145661377) 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, 50968 + ... + 53749.

It is an arithmetic number, because the mean of its divisors is an integer number (19791702).

Almost surely, 2^145661347 is an apocalyptic number.

145661347 is a deficient number, since it is larger than the sum of its proper divisors (12672269).

145661347 is a wasteful number, since it uses less digits than its factorization.

145661347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104837.

The product of its digits is 60480, while the sum is 37.

The square root of 145661347 is about 12069.0242770491. The cubic root of 145661347 is about 526.1562988799.

The spelling of 145661347 in words is "one hundred forty-five million, six hundred sixty-one thousand, three hundred forty-seven".