61896155 has 8 divisors (see below), whose sum is σ = 74438592. Its totient is φ = 49408128.

The previous prime is 61896077. The next prime is 61896161. The reversal of 61896155 is 55169816.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61896155 - 2¹⁶ = 61830619 is a prime.

It is a super-2 number, since 2×61896155² = 7662268007568050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11054 + ... + 15683.

It is an arithmetic number, because the mean of its divisors is an integer number (9304824).

Almost surely, 2^61896155 is an apocalyptic number.

61896155 is a deficient number, since it is larger than the sum of its proper divisors (12542437).

61896155 is a wasteful number, since it uses less digits than its factorization.

61896155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27205.

The product of its digits is 64800, while the sum is 41.

The square root of 61896155 is about 7867.4109464296. The cubic root of 61896155 is about 395.5680658412.

The spelling of 61896155 in words is "sixty-one million, eight hundred ninety-six thousand, one hundred fifty-five".