61843470 has 32 divisors (see below), whose sum is σ = 159842592. Its totient is φ = 15222912.

The previous prime is 61843459. The next prime is 61843471. The reversal of 61843470 is 7434816.

It is a super-2 number, since 2×61843470² = 7649229563281800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61843471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78897 + ... + 79676.

It is an arithmetic number, because the mean of its divisors is an integer number (4995081).

Almost surely, 2^61843470 is an apocalyptic number.

61843470 is an abundant number, since it is smaller than the sum of its proper divisors (97999122).

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

61843470 is a wasteful number, since it uses less digits than its factorization.

61843470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158596.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 61843470 is about 7864.0619275283. The cubic root of 61843470 is about 395.4558002819.

The spelling of 61843470 in words is "sixty-one million, eight hundred forty-three thousand, four hundred seventy".