145427677 has 4 divisors (see below), whose sum is σ = 148809760. Its totient is φ = 142045596.

The previous prime is 145427629. The next prime is 145427683. The reversal of 145427677 is 776724541.

145427677 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 145427677 - 2⁷ = 145427549 is a prime.

It is a super-2 number, since 2×145427677² = 42298418475232658, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 3382039 = 145427677 / (1 + 4 + 5 + 4 + 2 + 7 + 6 + 7 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145427617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1690977 + ... + 1691062.

It is an arithmetic number, because the mean of its divisors is an integer number (37202440).

Almost surely, 2^145427677 is an apocalyptic number.

It is an amenable number.

145427677 is a deficient number, since it is larger than the sum of its proper divisors (3382083).

145427677 is an equidigital number, since it uses as much as digits as its factorization.

145427677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3382082.

The product of its digits is 329280, while the sum is 43.

The square root of 145427677 is about 12059.3398243851. The cubic root of 145427677 is about 525.8747949042.

The spelling of 145427677 in words is "one hundred forty-five million, four hundred twenty-seven thousand, six hundred seventy-seven".