61871408 has 10 divisors (see below), whose sum is σ = 119875884. Its totient is φ = 30935696.

The previous prime is 61871399. The next prime is 61871417. The reversal of 61871408 is 80417816.

It is an interprime number because it is at equal distance from previous prime (61871399) and next prime (61871417).

It is a super-2 number, since 2×61871408² = 7656142255804928, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1933466 + ... + 1933497.

Almost surely, 2^61871408 is an apocalyptic number.

It is an amenable number.

61871408 is a deficient number, since it is larger than the sum of its proper divisors (58004476).

61871408 is a wasteful number, since it uses less digits than its factorization.

61871408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3866971 (or 3866965 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 61871408 is about 7865.8380354543. The cubic root of 61871408 is about 395.5153408223.

The spelling of 61871408 in words is "sixty-one million, eight hundred seventy-one thousand, four hundred eight".