147747690 has 24 divisors (see below), whose sum is σ = 384144228. Its totient is φ = 39399360.

The previous prime is 147747689. The next prime is 147747707. The reversal of 147747690 is 96747741.

It can be written as a sum of positive squares in 2 ways, for example, as 146385801 + 1361889 = 12099^2 + 1167^2 .

It is a super-2 number, since 2×147747690² = 43658759800672200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 820731 + ... + 820910.

Almost surely, 2^147747690 is an apocalyptic number.

147747690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

147747690 is an abundant number, since it is smaller than the sum of its proper divisors (236396538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

147747690 is a wasteful number, since it uses less digits than its factorization.

147747690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641654 (or 1641651 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The square root of 147747690 is about 12155.1507600688. The cubic root of 147747690 is about 528.6564879982.

The spelling of 147747690 in words is "one hundred forty-seven million, seven hundred forty-seven thousand, six hundred ninety".