61835490 has 24 divisors (see below), whose sum is σ = 160772508. Its totient is φ = 16489440.

The previous prime is 61835489. The next prime is 61835491. The reversal of 61835490 is 9453816.

61835490 is a `hidden beast` number, since 618 + 35 + 4 + 9 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (61835489) and next prime (61835491).

It can be written as a sum of positive squares in 2 ways, for example, as 61732449 + 103041 = 7857^2 + 321^2 .

It is not an unprimeable number, because it can be changed into a prime (61835491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 343441 + ... + 343620.

Almost surely, 2^61835490 is an apocalyptic number.

61835490 is an abundant number, since it is smaller than the sum of its proper divisors (98937018).

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

61835490 is a wasteful number, since it uses less digits than its factorization.

61835490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687074 (or 687071 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 61835490 is about 7863.5545397740. The cubic root of 61835490 is about 395.4387902778.

The spelling of 61835490 in words is "sixty-one million, eight hundred thirty-five thousand, four hundred ninety".