145877690 has 16 divisors (see below), whose sum is σ = 300091392. Its totient is φ = 50015184.

The previous prime is 145877671. The next prime is 145877741. The reversal of 145877690 is 96778541.

It is a super-2 number, since 2×145877690² = 42560600879472200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1041914 + ... + 1042053.

It is an arithmetic number, because the mean of its divisors is an integer number (18755712).

Almost surely, 2^145877690 is an apocalyptic number.

145877690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145877690 is an abundant number, since it is smaller than the sum of its proper divisors (154213702).

145877690 is a wasteful number, since it uses less digits than its factorization.

145877690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083981.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 145877690 is about 12077.9836893415. The cubic root of 145877690 is about 526.4166606154.

The spelling of 145877690 in words is "one hundred forty-five million, eight hundred seventy-seven thousand, six hundred ninety".