61238164 has 36 divisors (see below), whose sum is σ = 116986044. Its totient is φ = 28035072.

The previous prime is 61238153. The next prime is 61238171. The reversal of 61238164 is 46183216.

61238164 = T₄₂₅ + T₄₂₆ + ... + T₇₆₂.

It is a happy number.

61238164 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 1299600 + 59938564 = 1140^2 + 7742^2 .

It is a super-2 number, since 2×61238164² = 7500225460181792, which contains 22 as substring.

61238164 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105844 + ... + 106420.

Almost surely, 2^61238164 is an apocalyptic number.

It is an amenable number.

61238164 is a deficient number, since it is larger than the sum of its proper divisors (55747880).

61238164 is a wasteful number, since it uses less digits than its factorization.

61238164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764 (or 749 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 61238164 is about 7825.4817104125. The cubic root of 61238164 is about 394.1613655293.

The spelling of 61238164 in words is "sixty-one million, two hundred thirty-eight thousand, one hundred sixty-four".