61201390 has 16 divisors (see below), whose sum is σ = 114952608. Its totient is φ = 23416096.

The previous prime is 61201369. The next prime is 61201391. The reversal of 61201390 is 9310216.

It is a super-2 number, since 2×61201390² = 7491220275864200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61201391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132817 + ... + 133276.

It is an arithmetic number, because the mean of its divisors is an integer number (7184538).

Almost surely, 2^61201390 is an apocalyptic number.

61201390 is a deficient number, since it is larger than the sum of its proper divisors (53751218).

61201390 is a wasteful number, since it uses less digits than its factorization.

61201390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266123.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 61201390 is about 7823.1317258499. The cubic root of 61201390 is about 394.0824507289.

The spelling of 61201390 in words is "sixty-one million, two hundred one thousand, three hundred ninety".