161007622 has 4 divisors (see below), whose sum is σ = 241511436. Its totient is φ = 80503810.

The previous prime is 161007617. The next prime is 161007631. The reversal of 161007622 is 226700161.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40251904 + ... + 40251907.

It is an arithmetic number, because the mean of its divisors is an integer number (60377859).

Almost surely, 2^161007622 is an apocalyptic number.

161007622 is a deficient number, since it is larger than the sum of its proper divisors (80503814).

161007622 is an equidigital number, since it uses as much as digits as its factorization.

161007622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80503813.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 161007622 is about 12688.8778857707. The cubic root of 161007622 is about 544.0207672111.

Adding to 161007622 its reverse (226700161), we get a palindrome (387707783).

The spelling of 161007622 in words is "one hundred sixty-one million, seven thousand, six hundred twenty-two".