145640077 has 24 divisors (see below), whose sum is σ = 169456896. Its totient is φ = 124872000.

The previous prime is 145640051. The next prime is 145640083. The reversal of 145640077 is 770046541.

It is a happy number.

It is not a de Polignac number, because 145640077 - 2¹⁵ = 145607309 is a prime.

It is a super-2 number, since 2×145640077² = 42422064057131858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145640087) 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 23 ways as a sum of consecutive naturals, for example, 153318 + ... + 154264.

It is an arithmetic number, because the mean of its divisors is an integer number (7060704).

Almost surely, 2^145640077 is an apocalyptic number.

It is an amenable number.

145640077 is a deficient number, since it is larger than the sum of its proper divisors (23816819).

145640077 is a wasteful number, since it uses less digits than its factorization.

145640077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041 (or 1030 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 145640077 is about 12068.1430634543. The cubic root of 145640077 is about 526.1306872140.

The spelling of 145640077 in words is "one hundred forty-five million, six hundred forty thousand, seventy-seven".