145647701 has 4 divisors (see below), whose sum is σ = 145861632. Its totient is φ = 145433772.

The previous prime is 145647683. The next prime is 145647709. The reversal of 145647701 is 107746541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145647701 - 2¹⁸ = 145385557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145647709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105941 + ... + 107306.

It is an arithmetic number, because the mean of its divisors is an integer number (36465408).

Almost surely, 2^145647701 is an apocalyptic number.

It is an amenable number.

145647701 is a deficient number, since it is larger than the sum of its proper divisors (213931).

145647701 is an equidigital number, since it uses as much as digits as its factorization.

145647701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213930.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 145647701 is about 12068.4589322747. The cubic root of 145647701 is about 526.1398677236.

The spelling of 145647701 in words is "one hundred forty-five million, six hundred forty-seven thousand, seven hundred one".