145720774 has 8 divisors (see below), whose sum is σ = 223231968. Its totient is φ = 71310120.

The previous prime is 145720769. The next prime is 145720777. The reversal of 145720774 is 477027541.

145720774 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145720777) 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, 775017 + ... + 775204.

It is an arithmetic number, because the mean of its divisors is an integer number (27903996).

Almost surely, 2^145720774 is an apocalyptic number.

145720774 is a deficient number, since it is larger than the sum of its proper divisors (77511194).

145720774 is a wasteful number, since it uses less digits than its factorization.

145720774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550270.

The product of its (nonzero) digits is 54880, while the sum is 37.

The square root of 145720774 is about 12071.4859897197. The cubic root of 145720774 is about 526.2278430009.

The spelling of 145720774 in words is "one hundred forty-five million, seven hundred twenty thousand, seven hundred seventy-four".