147661690 has 16 divisors (see below), whose sum is σ = 289954080. Its totient is φ = 53695120.

The previous prime is 147661669. The next prime is 147661691. The reversal of 147661690 is 96166741.

147661690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×147661690² = 43607949387312200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (147661691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 671080 + ... + 671299.

It is an arithmetic number, because the mean of its divisors is an integer number (18122130).

Almost surely, 2^147661690 is an apocalyptic number.

147661690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

147661690 is a deficient number, since it is larger than the sum of its proper divisors (142292390).

147661690 is a wasteful number, since it uses less digits than its factorization.

147661690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342397.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 147661690 is about 12151.6126501794. The cubic root of 147661690 is about 528.5538957974.

The spelling of 147661690 in words is "one hundred forty-seven million, six hundred sixty-one thousand, six hundred ninety".