61831026 has 20 divisors (see below), whose sum is σ = 138547662. Its totient is φ = 20610288.

The previous prime is 61830983. The next prime is 61831043. The reversal of 61831026 is 62013816.

It can be written as a sum of positive squares in only one way, i.e., 53275401 + 8555625 = 7299^2 + 2925^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 190675 + ... + 190998.

Almost surely, 2^61831026 is an apocalyptic number.

61831026 is an abundant number, since it is smaller than the sum of its proper divisors (76716636).

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

61831026 is a wasteful number, since it uses less digits than its factorization.

61831026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381687 (or 381678 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 61831026 is about 7863.2706935473. The cubic root of 61831026 is about 395.4292742688.

The spelling of 61831026 in words is "sixty-one million, eight hundred thirty-one thousand, twenty-six".