70390541 has 4 divisors (see below), whose sum is σ = 75805212. Its totient is φ = 64975872.

The previous prime is 70390531. The next prime is 70390543. The reversal of 70390541 is 14509307.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14509307 = 107 ⋅135601.

It can be written as a sum of positive squares in 2 ways, for example, as 6869641 + 63520900 = 2621^2 + 7970^2 .

It is not a de Polignac number, because 70390541 - 2⁶ = 70390477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70390543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2707316 + ... + 2707341.

It is an arithmetic number, because the mean of its divisors is an integer number (18951303).

Almost surely, 2^70390541 is an apocalyptic number.

It is an amenable number.

70390541 is a deficient number, since it is larger than the sum of its proper divisors (5414671).

70390541 is a wasteful number, since it uses less digits than its factorization.

70390541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5414670.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 70390541 is about 8389.9070912615. The cubic root of 70390541 is about 412.8935522906.

Adding to 70390541 its reverse (14509307), we get a palindrome (84899848).

The spelling of 70390541 in words is "seventy million, three hundred ninety thousand, five hundred forty-one".