290661134 has 4 divisors (see below), whose sum is σ = 435991704. Its totient is φ = 145330566.

The previous prime is 290661131. The next prime is 290661139. The reversal of 290661134 is 431166092.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 290661134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290661131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72665282 + ... + 72665285.

It is an arithmetic number, because the mean of its divisors is an integer number (108997926).

Almost surely, 2^290661134 is an apocalyptic number.

290661134 is a deficient number, since it is larger than the sum of its proper divisors (145330570).

290661134 is a wasteful number, since it uses less digits than its factorization.

290661134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145330569.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 290661134 is about 17048.7868776638. The cubic root of 290661134 is about 662.4132148809.

The spelling of 290661134 in words is "two hundred ninety million, six hundred sixty-one thousand, one hundred thirty-four".