47651690 has 16 divisors (see below), whose sum is σ = 86351400. Its totient is φ = 18932160.

The previous prime is 47651687. The next prime is 47651693. The reversal of 47651690 is 9615674.

It is an interprime number because it is at equal distance from previous prime (47651687) and next prime (47651693).

It can be written as a sum of positive squares in 4 ways, for example, as 16056049 + 31595641 = 4007^2 + 5621^2 .

It is a super-2 number, since 2×47651690² = 4541367119712200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47651693) 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, 14501 + ... + 17480.

Almost surely, 2^47651690 is an apocalyptic number.

47651690 is a deficient number, since it is larger than the sum of its proper divisors (38699710).

47651690 is a wasteful number, since it uses less digits than its factorization.

47651690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32137.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 47651690 is about 6903.0203534395. The cubic root of 47651690 is about 362.5429263474.

The spelling of 47651690 in words is "forty-seven million, six hundred fifty-one thousand, six hundred ninety".