720441146 has 4 divisors (see below), whose sum is σ = 1080661722. Its totient is φ = 360220572.

The previous prime is 720441131. The next prime is 720441157. The reversal of 720441146 is 641144027.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 536431921 + 184009225 = 23161^2 + 13565^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180110285 + ... + 180110288.

Almost surely, 2^720441146 is an apocalyptic number.

720441146 is a deficient number, since it is larger than the sum of its proper divisors (360220576).

720441146 is a wasteful number, since it uses less digits than its factorization.

720441146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360220575.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 720441146 is about 26841.0347416041. The cubic root of 720441146 is about 896.4639632146.

The spelling of 720441146 in words is "seven hundred twenty million, four hundred forty-one thousand, one hundred forty-six".