61901390 has 16 divisors (see below), whose sum is σ = 114140880. Its totient is φ = 24156480.

The previous prime is 61901387. The next prime is 61901401. The reversal of 61901390 is 9310916.

It is a congruent 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, 75080 + ... + 75899.

It is an arithmetic number, because the mean of its divisors is an integer number (7133805).

Almost surely, 2^61901390 is an apocalyptic number.

61901390 is a deficient number, since it is larger than the sum of its proper divisors (52239490).

61901390 is a wasteful number, since it uses less digits than its factorization.

61901390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151027.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 61901390 is about 7867.7436409685. The cubic root of 61901390 is about 395.5792175325.

The spelling of 61901390 in words is "sixty-one million, nine hundred one thousand, three hundred ninety".